Freshwater Species Guide
Explore detailed information about freshwater aquarium fish species
Showing 279 of 279 species
Malawian Cichlids
Various Pseudotropheus, Melanochromis, Labidochromis
CichlidsSize:7.6-15.2 cm (3-6 inches)
Care Level:Intermediate
Temperament:Aggressive/Territorial
Angelfish
Pterophyllum scalare
CichlidsSize:15 cm tall, 20 cm long (6 inches tall, 8 inches long)
Care Level:Beginner
Temperament:Peaceful/Semi-aggressive
Tanganyikan Cichlids
Various Lamprologus, Julidochromis, Neolamprologus
CichlidsSize:5-20 cm (2-8 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Bronze Corydoras
Corydoras aeneus
CatfishSize:7 cm (2.8 inches)
Care Level:Beginner
Temperament:Peaceful
Peppered Corydoras
Corydoras paleatus
CatfishSize:7 cm (2.8 inches)
Care Level:Beginner
Temperament:Peaceful
Panda Corydoras
Corydoras panda
CatfishSize:5 cm (2 inches)
Care Level:Intermediate
Temperament:Peaceful
Julii Corydoras
Corydoras julii
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Albino Corydoras
Corydoras aeneus (Albino)
CatfishSize:7 cm (2.8 inches)
Care Level:Beginner
Temperament:Peaceful
Sterbai Corydoras
Corydoras sterbai
CatfishSize:7 cm (2.8 inches)
Care Level:Intermediate
Temperament:Peaceful
Emerald Corydoras
Corydoras splendens
CatfishSize:9 cm (3.5 inches)
Care Level:Beginner
Temperament:Peaceful
Adolfi Corydoras
Corydoras adolfoi
CatfishSize:5 cm (2 inches)
Care Level:Advanced
Temperament:Peaceful
Salt and Pepper Cory
Corydoras habrosus
CatfishSize:3 cm (1.2 inches)
Care Level:Intermediate
Temperament:Peaceful
Dwarf Corydoras
Corydoras hastatus
CatfishSize:2.5 cm (1 inch)
Care Level:Intermediate
Temperament:Peaceful
Pygmy Corydoras
Corydoras pygmaeus
CatfishSize:3 cm (1.2 inches)
Care Level:Intermediate
Temperament:Peaceful
Three Line Corydoras
Corydoras trilineatus
CatfishSize:6 cm (2.4 inches)
Care Level:Beginner
Temperament:Peaceful
Venezuelan Orange Cory
Corydoras venezuelanus
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Skunk Cory
Corydoras arcuatus
CatfishSize:7 cm (2.8 inches)
Care Level:Beginner
Temperament:Peaceful
Bandit Cory
Corydoras metae
CatfishSize:6 cm (2.4 inches)
Care Level:Beginner
Temperament:Peaceful
Green Gold Cory
Corydoras melanotaenia
CatfishSize:6.5 cm (2.6 inches)
Care Level:Beginner
Temperament:Peaceful
Leopard Cory
Corydoras leopardus
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Duplicate Cory
Corydoras duplicareus
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Punctatus Cory
Corydoras punctatus
CatfishSize:7 cm (2.8 inches)
Care Level:Beginner
Temperament:Peaceful
Schwartzi Cory
Corydoras schwartzi
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Axelrodi Cory
Corydoras axelrodi
CatfishSize:5 cm (2 inches)
Care Level:Intermediate
Temperament:Peaceful
Agassizi Cory
Corydoras agassizii
CatfishSize:7 cm (2.8 inches)
Care Level:Beginner
Temperament:Peaceful
Elegans Cory
Corydoras elegans
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Weitzmani Cory
Corydoras weitzmani
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Rabauti Cory
Corydoras rabauti
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Sodalis Cory
Corydoras sodalis
CatfishSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Loreto Cory
Corydoras loretoensis
CatfishSize:6.5 cm (2.6 inches)
Care Level:Beginner
Temperament:Peaceful
Common Pleco
Hypostomus plecostomus
CatfishSize:30-45 cm (12-18 inches)
Care Level:Intermediate
Temperament:Peaceful
Bristlenose Pleco
Ancistrus sp.
CatfishSize:10-15 cm (4-6 inches)
Care Level:Beginner
Temperament:Peaceful
Zebra Pleco
Hypancistrus zebra
CatfishSize:8 cm (3.2 inches)
Care Level:Advanced
Temperament:Peaceful
Royal Pleco
Panaque nigrolineatus
CatfishSize:40+ cm (16+ inches)
Care Level:Advanced
Temperament:Peaceful
Clown Pleco
Panaqolus maccus
CatfishSize:8-10 cm (3-4 inches)
Care Level:Beginner
Temperament:Peaceful
Leopard Frog Pleco
Peckoltia compta
CatfishSize:7-9 cm (3-3.5 inches)
Care Level:Intermediate
Temperament:Peaceful
Gold Nugget Pleco
Baryancistrus xanthellus
CatfishSize:17-20 cm (7-8 inches)
Care Level:Advanced
Temperament:Peaceful
Sultan Pleco
Leporacanthicus joselimai
CatfishSize:25-30 cm (10-12 inches)
Care Level:Advanced
Temperament:Semi-aggressive
Vampire Pleco
Leporacanthicus vampyrus
CatfishSize:30+ cm (12+ inches)
Care Level:Advanced
Temperament:Aggressive
L144 Blue-Eyed Lemon Bristlenose
Ancistrus dolichopterus var.
CatfishSize:10-12 cm (4-5 inches)
Care Level:Beginner
Temperament:Peaceful
L200 Green Phantom Pleco
Hemiancistrus subviridis
CatfishSize:20-25 cm (8-10 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
L600 Megalancistrus
Megalancistrus parananus
CatfishSize:40-45+ cm (16-18+ inches)
Care Level:Advanced
Temperament:Peaceful
L333 King Tiger Pleco
Hypancistrus sp.
CatfishSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
L397 Alenquer Tiger Pleco
Panaqolus sp.
CatfishSize:12-15 cm (5-6 inches)
Care Level:Intermediate
Temperament:Peaceful
L260 Queen Arabesque Pleco
Hypancistrus sp.
CatfishSize:8-12 cm (3-5 inches)
Care Level:Beginner
Temperament:Peaceful
L066 King Tiger Pleco
Hypancistrus sp.
CatfishSize:14-16 cm (5.5-6.5 inches)
Care Level:Intermediate
Temperament:Peaceful
L177 Gold Nugget Pleco
Baryancistrus sp.
CatfishSize:25-30 cm (10-12 inches)
Care Level:Intermediate
Temperament:Peaceful
L129 Colombian Zebra Pleco
Hypancistrus debilittera
CatfishSize:6-8 cm (2.5-3 inches)
Care Level:Beginner
Temperament:Peaceful
L002 Tiger Pleco
Panaque cochliodon
CatfishSize:30-40 cm (12-16 inches)
Care Level:Intermediate
Temperament:Peaceful
L075 Orange Seam Pleco
Hypancistrus sp.
CatfishSize:7-10 cm (3-4 inches)
Care Level:Beginner
Temperament:Peaceful
L471 Dwarf Spotted Pleco
Hypancistrus sp.
CatfishSize:4-6 cm (1.5-2.5 inches)
Care Level:Beginner
Temperament:Peaceful
L236 Super White Pleco
Hypancistrus sp.
CatfishSize:8-10 cm (3-4 inches)
Care Level:Intermediate
Temperament:Peaceful
L404 Titanic Pleco
Leporacanthicus heterodon
CatfishSize:45-50+ cm (18-20+ inches)
Care Level:Advanced
Temperament:Peaceful
Zebra Danio
Danio rerio
Danios & MinnowsSize:4-5 cm (1.5-2 inches)
Care Level:Beginner
Temperament:Peaceful
Pearl Danio
Danio albolineatus
Danios & MinnowsSize:6 cm (2.5 inches)
Care Level:Beginner
Temperament:Peaceful
Giant Danio
Devario aequipinnatus
Danios & MinnowsSize:10-12 cm (4-5 inches)
Care Level:Intermediate
Temperament:Peaceful (but boisterous)
Leopard Danio
Danio rerio var.
Danios & MinnowsSize:4-5 cm (1.5-2 inches)
Care Level:Beginner
Temperament:Peaceful
Blue Danio
Danio kerri
Danios & MinnowsSize:5-6 cm (2-2.5 inches)
Care Level:Beginner
Temperament:Peaceful
Glowlight Danio
Danio choprae
Danios & MinnowsSize:3-4 cm (1-1.5 inches)
Care Level:Intermediate
Temperament:Peaceful
Galaxy Rasbora (Celestial Pearl Danio)
Danio margaritatus
Danios & MinnowsSize:2-3 cm (0.8-1.2 inches)
Care Level:Intermediate
Temperament:Peaceful
Orange-Finned Danio
Danio kyathit
Danios & MinnowsSize:5-6 cm (2-2.5 inches)
Care Level:Beginner
Temperament:Peaceful
Rosy Danio
Danio roseus
Danios & MinnowsSize:4-5 cm (1.5-2 inches)
Care Level:Beginner
Temperament:Peaceful
Spotted Danio
Danio nigrofasciatus
Danios & MinnowsSize:4 cm (1.5 inches)
Care Level:Beginner
Temperament:Peaceful
Longfin Zebra Danio
Danio rerio var.
Danios & MinnowsSize:4-5 cm (1.5-2 inches)
Care Level:Beginner
Temperament:Peaceful
Turquoise Danio
Danio kerri
Danios & MinnowsSize:5-6 cm (2-2.5 inches)
Care Level:Beginner
Temperament:Peaceful
White Cloud Mountain Minnow
Tanichthys albonubes
Danios & MinnowsSize:3-4 cm (1.5 inches)
Care Level:Beginner
Temperament:Peaceful
Gold White Cloud Minnow
Tanichthys albonubes var. gold
Danios & MinnowsSize:3-4 cm (1.5 inches)
Care Level:Beginner
Temperament:Peaceful
Vietnamese White Cloud
Tanichthys micagemmae
Danios & MinnowsSize:2.5-3 cm (1 inch)
Care Level:Intermediate
Temperament:Peaceful
Meteor Minnow
Tanichthys albonubes var. meteor
Danios & MinnowsSize:3-4 cm (1.5 inches)
Care Level:Beginner
Temperament:Peaceful
Pink White Cloud
Tanichthys albonubes var. pink
Danios & MinnowsSize:3-4 cm (1.5 inches)
Care Level:Beginner
Temperament:Peaceful
Longfin White Cloud
Tanichthys albonubes var. longfin
Danios & MinnowsSize:3-4 cm (1.5 inches)
Care Level:Beginner
Temperament:Peaceful
Vietnamese Cardinal Minnow
Tanichthys thacbaensis
Danios & MinnowsSize:2-2.5 cm (0.8 inches)
Care Level:Advanced
Temperament:Very Peaceful
Chinese Hillstream Minnow
Tanichthys lin
Danios & MinnowsSize:3-4 cm (1.5 inches)
Care Level:Advanced
Temperament:Peaceful
Harlequin Rasbora
Trigonostigma heteromorpha
RasborasSize:4.5 cm (1.8 inches)
Care Level:Beginner
Temperament:Peaceful
Lambchop Rasbora
Trigonostigma espei
RasborasSize:3.5 cm (1.4 inches)
Care Level:Beginner
Temperament:Peaceful
Scissortail Rasbora
Rasbora trilineata
RasborasSize:12-15 cm (5-6 inches)
Care Level:Beginner
Temperament:Peaceful
Redline Rasbora
Rasbora pauciperforata
RasborasSize:7 cm (2.8 inches)
Care Level:Beginner
Temperament:Peaceful
Brilliant Rasbora
Rasbora borapetensis
RasborasSize:5 cm (2 inches)
Care Level:Beginner
Temperament:Peaceful
Emerald Rasbora
Rasbora dorsiocellata
RasborasSize:6 cm (2.4 inches)
Care Level:Beginner
Temperament:Peaceful
Dwarf Rasbora
Boraras maculatus
RasborasSize:2.5 cm (1 inch)
Care Level:Intermediate
Temperament:Peaceful
Chili Rasbora
Boraras brigittae
RasborasSize:2 cm (0.8 inches)
Care Level:Advanced
Temperament:Very Peaceful
Phoenix Rasbora
Boraras merah
RasborasSize:2 cm (0.8 inches)
Care Level:Advanced
Temperament:Very Peaceful
Strawberry Rasbora
Boraras naevus
RasborasSize:2 cm (0.8 inches)
Care Level:Advanced
Temperament:Very Peaceful
Least Rasbora
Boraras urophthalmoides
RasborasSize:1.6 cm (0.6 inches)
Care Level:Advanced
Temperament:Very Peaceful
Fire Rasbora
Rasboroides vaterifloris
RasborasSize:3 cm (1.2 inches)
Care Level:Intermediate
Temperament:Peaceful
Giant Rasbora
Rasbora daniconius
RasborasSize:15-20 cm (6-8 inches)
Care Level:Beginner
Temperament:Peaceful
Yellow Rasbora
Rasbora lutea
RasborasSize:8 cm (3.2 inches)
Care Level:Beginner
Temperament:Peaceful
Black Line Rasbora
Rasbora nigrofasciata
RasborasSize:6 cm (2.4 inches)
Care Level:Beginner
Temperament:Peaceful
Brown Discus
Symphysodon aequifasciatus
CichlidsSize:15-20 cm (6-8 inches)
Care Level:Advanced
Temperament:Peaceful
Blue Discus
Symphysodon haraldi
CichlidsSize:15-20 cm (6-8 inches)
Care Level:Advanced
Temperament:Peaceful
Green Discus
Symphysodon tarzoo
CichlidsSize:15-20 cm (6-8 inches)
Care Level:Advanced
Temperament:Peaceful
Pigeon Blood Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Checkerboard Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Turquoise Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Red Turquoise Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Cobalt Blue Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Powder Blue Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Snow White Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Yellow Crystal Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Red Spotted Green Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Leopard Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Marlboro Red Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
German Red Discus
Symphysodon aequifasciatus var.
CichlidsSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Featherfin Synodontis
Synodontis eupterus
CatfishSize:20-25 cm (8-10 inches)
Care Level:Intermediate
Temperament:Peaceful
Lace Catfish
Synodontis nigrita
CatfishSize:15-20 cm (6-8 inches)
Care Level:Beginner
Temperament:Peaceful
Petricola Catfish
Synodontis petricola
CatfishSize:10-13 cm (4-5 inches)
Care Level:Intermediate
Temperament:Peaceful
Bumblebee Catfish
Pseudomystus siamensis
CatfishSize:8-10 cm (3-4 inches)
Care Level:Intermediate
Temperament:Peaceful
Red Tail Catfish
Phractocephalus hemioliopterus
CatfishSize:100+ cm (40+ inches)
Care Level:Advanced
Temperament:Aggressive
Tiger Shovelnose Catfish
Pseudoplatystoma fasciatum
CatfishSize:60+ cm (24+ inches)
Care Level:Advanced
Temperament:Aggressive
Striped Raphael Catfish
Platydoras armatulus
CatfishSize:15-20 cm (6-8 inches)
Care Level:Beginner
Temperament:Peaceful
Spotted Raphael Catfish
Agamyxis pectinifrons
CatfishSize:12-15 cm (5-6 inches)
Care Level:Beginner
Temperament:Peaceful
Asian Stone Catfish
Hara jerdoni
CatfishSize:3-4 cm (1.2-1.6 inches)
Care Level:Intermediate
Temperament:Peaceful
Twig Catfish
Farlowella acus
CatfishSize:15-20 cm (6-8 inches)
Care Level:Advanced
Temperament:Peaceful
Guppies
Poecilia reticulata
LivebearersSize:3-6 cm (1.2-2.4 inches)
Care Level:Beginner
Temperament:Peaceful
Tetras
Various Tetra species
CharacinsSize:2.5-7.5 cm (1-3 inches)
Care Level:Beginner
Temperament:Peaceful
Pleco Catfish
Various Hypostomus, Pterygoplichthys species
CatfishSize:15-45 cm (6-18 inches)
Care Level:Intermediate
Temperament:Peaceful but territorial
Veiltail Betta
Betta splendens
AnabantoidsSize:6 cm (2.5 inches)
Care Level:Beginner
Temperament:Territorial/Aggressive to other bettas
Crowntail Betta
Betta splendens
AnabantoidsSize:6 cm (2.5 inches)
Care Level:Beginner
Temperament:Territorial/Aggressive to other bettas
Halfmoon Betta
Betta splendens
AnabantoidsSize:6 cm (2.5 inches)
Care Level:Intermediate
Temperament:Territorial/Aggressive to other bettas
Plakat Betta
Betta splendens
AnabantoidsSize:6 cm (2.5 inches)
Care Level:Beginner
Temperament:Territorial/Aggressive to other bettas
Double Tail Betta
Betta splendens
AnabantoidsSize:6 cm (2.5 inches)
Care Level:Beginner
Temperament:Territorial/Aggressive to other bettas
Peaceful Betta
Betta imbellis
AnabantoidsSize:5 cm (2 inches)
Care Level:Intermediate
Temperament:Peaceful
Mahachai Betta
Betta mahachaiensis
AnabantoidsSize:5.5 cm (2.2 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Emerald Betta
Betta smaragdina
AnabantoidsSize:6 cm (2.4 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Strawberry Betta
Betta albimarginata
AnabantoidsSize:4 cm (1.6 inches)
Care Level:Intermediate
Temperament:Peaceful
Snakehead Betta
Betta channoides
AnabantoidsSize:5 cm (2 inches)
Care Level:Intermediate
Temperament:Peaceful
Falx Betta
Betta falx
AnabantoidsSize:5 cm (2 inches)
Care Level:Intermediate
Temperament:Peaceful
Forest Betta
Betta pugnax
AnabantoidsSize:8 cm (3.2 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Spotted Betta
Betta picta
AnabantoidsSize:4.5 cm (1.8 inches)
Care Level:Intermediate
Temperament:Peaceful
Barbs
Various Barbus, Puntius species
CyprinidsSize:5-15 cm (2-6 inches)
Care Level:Beginner
Temperament:Peaceful/Semi-aggressive
Discus
Symphysodon species
CichlidsSize:15-20 cm (6-8 inches)
Care Level:Advanced
Temperament:Peaceful/Semi-aggressive
Danios & Minnows
Various Danio, Devario species
CyprinidsSize:3-10 cm (1-4 inches)
Care Level:Beginner
Temperament:Peaceful
Gouramis
Various Trichogaster, Colisa species
AnabantoidsSize:5-25 cm (2-10 inches)
Care Level:Beginner
Temperament:Peaceful/Semi-aggressive
Rainbowfish
Various Melanotaenia, Pseudomugil species
RainbowfishSize:7-15 cm (3-6 inches)
Care Level:Beginner
Temperament:Peaceful
Mollies
Poecilia species
LivebearersSize:6-12 cm (2.5-5 inches)
Care Level:Beginner
Temperament:Peaceful
Platies
Xiphophorus maculatus
LivebearersSize:4-7 cm (1.5-3 inches)
Care Level:Beginner
Temperament:Peaceful
Swordtails
Xiphophorus hellerii
LivebearersSize:8-12 cm (3-5 inches)
Care Level:Beginner
Temperament:Peaceful/Semi-aggressive
Loaches
Various Botia, Chromobotia species
LoachesSize:5-30 cm (2-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Rasboras
Various Rasbora, Trigonostigma species
CyprinidsSize:2-7 cm (0.8-3 inches)
Care Level:Beginner
Temperament:Peaceful
Killifish
Various Aphyosemion, Nothobranchius species
KillifishSize:3-10 cm (1-4 inches)
Care Level:Intermediate
Temperament:Peaceful/Semi-aggressive
Fancy Goldfish
Carassius auratus
GoldfishSize:15-25 cm (6-10 inches)
Care Level:Beginner
Temperament:Peaceful
Freshwater Sharks
Various Epalzeorhynchos, Labeo species
SharksSize:10-60 cm (4-24 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Larger Catfish
Various Pimelodus, Pseudoplatystoma species
CatfishSize:15-60+ cm (6-24+ inches)
Care Level:Advanced
Temperament:Peaceful but predatory
Suckermouth Catfish
Various smaller Ancistrus, Otocinclus species
CatfishSize:3-15 cm (1-6 inches)
Care Level:Beginner
Temperament:Peaceful
Hatchetfish
Various Carnegiella, Thoracocharax species
CharacinsSize:4-9 cm (1.5-3.5 inches)
Care Level:Intermediate
Temperament:Peaceful
Other African Cichlids
Various Haplochromis, Astatotilapia species
CichlidsSize:7.5-30 cm (3-12 inches)
Care Level:Intermediate
Temperament:Varies
New World Cichlids
Various Central/South American species
CichlidsSize:10-35 cm (4-14 inches)
Care Level:Intermediate
Temperament:Semi-aggressive to Aggressive
Miscellaneous Fish
Various species
VariousSize:5-50 cm (2-20 inches)
Care Level:Advanced
Temperament:Varies
Freshwater Invertebrates
Various shrimp, snail, and crab species
InvertebratesSize:0.5-10 cm (0.2-4 inches)
Care Level:Beginner
Temperament:Peaceful
Brackish Fish
Various brackish water species
BrackishSize:5-30 cm (2-12 inches)
Care Level:Advanced
Temperament:Varies
Pond Fish
Various cold-water species
Pond FishSize:15-60+ cm (6-24+ inches)
Care Level:Beginner
Temperament:Peaceful
Freshwater Plants
Various aquatic plant species
PlantsSize:2-50+ cm (1-20+ inches)
Care Level:Beginner
Temperament:Beneficial
Freshwater Shrimp
Various Neocaridina, Caridina species
InvertebratesSize:1-5 cm (0.4-2 inches)
Care Level:Beginner
Temperament:Peaceful
Freshwater Snails
Various Nerite, Mystery, Ramshorn species
InvertebratesSize:1-7 cm (0.4-3 inches)
Care Level:Beginner
Temperament:Peaceful
Freshwater Crabs
Various Geosesarma, Cardisoma species
InvertebratesSize:1-10 cm (0.4-4 inches)
Care Level:Intermediate
Temperament:Peaceful/Territorial
Freshwater Crayfish
Various Procambarus, Cherax species
InvertebratesSize:5-25 cm (2-10 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Cherry Shrimp
Neocaridina davidi
InvertebratesSize:2-3 cm (0.8-1.2 inches)
Care Level:Beginner
Temperament:Peaceful
Amano Shrimp
Caridina multidentata
InvertebratesSize:3-5 cm (1.2-2 inches)
Care Level:Beginner
Temperament:Peaceful
Crystal Red Shrimp
Caridina cantonensis
InvertebratesSize:1.5-2.5 cm (0.6-1 inch)
Care Level:Intermediate
Temperament:Peaceful
Blue Bolt Shrimp
Caridina cantonensis var.
InvertebratesSize:1.5-2.5 cm (0.6-1 inch)
Care Level:Advanced
Temperament:Peaceful
Nerite Snails
Neritina species
InvertebratesSize:1-3 cm (0.4-1.2 inches)
Care Level:Beginner
Temperament:Peaceful
Mystery Snails
Pomacea bridgesii
InvertebratesSize:3-7 cm (1.2-3 inches)
Care Level:Beginner
Temperament:Peaceful
Ramshorn Snails
Planorbarius corneus
InvertebratesSize:1-4 cm (0.4-1.6 inches)
Care Level:Beginner
Temperament:Peaceful
Vampire Crabs
Geosesarma species
InvertebratesSize:1-2 cm (0.4-0.8 inches)
Care Level:Intermediate
Temperament:Peaceful
Thai Micro Crabs
Limnopilos naiyanetri
InvertebratesSize:0.5-1 cm (0.2-0.4 inches)
Care Level:Intermediate
Temperament:Peaceful
Leaf Fish
Monocirrhus polyacanthus
SpecialitySize:8-10 cm (3-4 inches)
Care Level:Advanced
Temperament:Predatory
Archerfish
Toxotes species
SpecialitySize:15-25 cm (6-10 inches)
Care Level:Advanced
Temperament:Semi-aggressive
Badis
Badis badis
SpecialitySize:5-8 cm (2-3 inches)
Care Level:Intermediate
Temperament:Territorial
Dario
Dario dario
SpecialitySize:2-3 cm (0.8-1.2 inches)
Care Level:Intermediate
Temperament:Territorial
Freshwater Eels
Various Mastacembelus, Macrognathus species
SpecialitySize:15-75 cm (6-30 inches)
Care Level:Advanced
Temperament:Peaceful but predatory
Freshwater Gobies
Various Stiphodon, Rhinogobius species
SpecialitySize:3-8 cm (1-3 inches)
Care Level:Intermediate
Temperament:Peaceful/Territorial
Gudgeons
Various Hypseleotris, Mogurnda species
SpecialitySize:5-15 cm (2-6 inches)
Care Level:Beginner
Temperament:Peaceful
Leporinus
Leporinus fasciatus
SpecialitySize:20-30 cm (8-12 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Freshwater Pufferfish
Various Tetraodon, Carinotetraodon species
SpecialitySize:2-20 cm (0.8-8 inches)
Care Level:Advanced
Temperament:Aggressive/Territorial
Ropefish
Erpetoichthys calabaricus
SpecialitySize:30-60 cm (12-24 inches)
Care Level:Advanced
Temperament:Peaceful but predatory
Snakehead
Various Channa species
SpecialitySize:15-100 cm (6-40 inches)
Care Level:Advanced
Temperament:Aggressive/Predatory
Dwarf Pufferfish
Carinotetraodon travancoricus
SpecialitySize:2-3 cm (0.8-1.2 inches)
Care Level:Intermediate
Temperament:Aggressive/Territorial
Figure 8 Pufferfish
Tetraodon biocellatus
SpecialitySize:6-8 cm (2.5-3 inches)
Care Level:Advanced
Temperament:Semi-aggressive
Tire Track Eel
Mastacembelus armatus
SpecialitySize:60-90 cm (24-36 inches)
Care Level:Advanced
Temperament:Peaceful but predatory
Fire Eel
Mastacembelus erythrotaenia
SpecialitySize:75-100 cm (30-40 inches)
Care Level:Advanced
Temperament:Peaceful but predatory
Peacock Goby
Tateurndina ocellicauda
SpecialitySize:6-8 cm (2.5-3 inches)
Care Level:Beginner
Temperament:Peaceful
Bumblebee Goby
Brachygobius doriae
SpecialitySize:3-4 cm (1.2-1.6 inches)
Care Level:Intermediate
Temperament:Territorial
Empire Gudgeon
Hypseleotris compressa
SpecialitySize:8-12 cm (3-5 inches)
Care Level:Beginner
Temperament:Peaceful
Dwarf Snakehead
Channa gachua
SpecialitySize:15-20 cm (6-8 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Jack Dempsey
Rocio octofasciata
CichlidsSize:20-25 cm (8-10 inches)
Care Level:Intermediate
Temperament:Aggressive
Convict Cichlid
Amatitlania nigrofasciata
CichlidsSize:10-15 cm (4-6 inches)
Care Level:Beginner
Temperament:Aggressive when breeding
Firemouth Cichlid
Thorichthys meeki
CichlidsSize:15-17 cm (6-7 inches)
Care Level:Beginner
Temperament:Semi-aggressive
Texas Cichlid
Herichthys cyanoguttatus
CichlidsSize:30 cm (12 inches)
Care Level:Advanced
Temperament:Very Aggressive
Green Terror
Andinoacara rivulatus
CichlidsSize:20-30 cm (8-12 inches)
Care Level:Advanced
Temperament:Very Aggressive
Salvini Cichlid
Trichromis salvini
CichlidsSize:15-22 cm (6-9 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Blood Parrot Cichlid
Hybrid species
CichlidsSize:20-25 cm (8-10 inches)
Care Level:Intermediate
Temperament:Peaceful/Semi-aggressive
Jaguar Cichlid
Parachromis managuensis
CichlidsSize:35-60 cm (14-24 inches)
Care Level:Advanced
Temperament:Extremely Aggressive
Red Devil Cichlid
Amphilophus labiatus
CichlidsSize:25-35 cm (10-14 inches)
Care Level:Advanced
Temperament:Extremely Aggressive
Midas Cichlid
Amphilophus citrinellus
CichlidsSize:25-35 cm (10-14 inches)
Care Level:Advanced
Temperament:Extremely Aggressive
Flowerhorn Cichlid
Hybrid species
CichlidsSize:25-40 cm (10-16 inches)
Care Level:Advanced
Temperament:Extremely Aggressive
Rainbow Cichlid
Herotilapia multispinosa
CichlidsSize:10-15 cm (4-6 inches)
Care Level:Beginner
Temperament:Peaceful/Semi-aggressive
Nicaraguan Cichlid
Hypsophrys nicaraguensis
CichlidsSize:20-25 cm (8-10 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Black Belt Cichlid
Vieja maculicauda
CichlidsSize:30-35 cm (12-14 inches)
Care Level:Intermediate
Temperament:Semi-aggressive
Blue Acara
Andinoacara pulcher
CichlidsSize:15-20 cm (6-8 inches)
Care Level:Beginner
Temperament:Peaceful/Semi-aggressive
Red Terror
Mesoheros festae
CichlidsSize:35-50 cm (14-20 inches)
Care Level:Advanced
Temperament:Extremely Aggressive
Leucistic Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Wild Type Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Melanoid Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Albino Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Golden Albino Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Copper Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
GFP (Green Fluorescent Protein) Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Mosaic Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Chimera Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Piebald Axolotl
Ambystoma mexicanum
AmphibiansSize:23-30 cm (9-12 inches)
Care Level:Intermediate
Temperament:Peaceful
Electric Blue Johanni
Melanochromis johanni
CichlidsSize:8-10 cm (3-4 inches)
Care Level:Intermediate
Temperament:Highly Aggressive
Yellow Lab Cichlid
Labidochromis caeruleus
CichlidsSize:8-10 cm (3-4 inches)
Care Level:Beginner
Temperament:Semi-Aggressive
Red Zebra Cichlid
Maylandia estherae
CichlidsSize:10-13 cm (4-5 inches)
Care Level:Intermediate
Temperament:Aggressive
Cobalt Blue Zebra
Maylandia callainos
CichlidsSize:10-13 cm (4-5 inches)
Care Level:Intermediate
Temperament:Aggressive
Peacock Cichlid (Aulonocara)
Aulonocara sp.
CichlidsSize:10-15 cm (4-6 inches)
Care Level:Intermediate
Temperament:Semi-Aggressive
Frontosa Cichlid
Cyphotilapia frontosa
CichlidsSize:30-35 cm (12-14 inches)
Care Level:Advanced
Temperament:Semi-Aggressive
Tropheus Cichlid
Tropheus sp.
CichlidsSize:12-15 cm (5-6 inches)
Care Level:Advanced
Temperament:Highly Aggressive
Shell Dweller Cichlid
Lamprologus sp.
CichlidsSize:3-5 cm (1-2 inches)
Care Level:Intermediate
Temperament:Peaceful
Calvus Cichlid
Altolamprologus calvus
CichlidsSize:12-15 cm (5-6 inches)
Care Level:Intermediate
Temperament:Semi-Aggressive
Kribensis Cichlid
Pelvicachromis pulcher
CichlidsSize:8-10 cm (3-4 inches)
Care Level:Beginner
Temperament:Peaceful
Jewel Cichlid
Hemichromis bimaculatus
CichlidsSize:12-15 cm (5-6 inches)
Care Level:Intermediate
Temperament:Highly Aggressive
Egyptian Mouthbrooder
Pseudocrenilabrus multicolor
CichlidsSize:6-8 cm (2-3 inches)
Care Level:Beginner
Temperament:Peaceful
Butterfly Cichlid
Anomalochromis thomasi
CichlidsSize:6-8 cm (2-3 inches)
Care Level:Beginner
Temperament:Peaceful
Silver Angelfish
Pterophyllum scalare
AngelfishSize:15 cm (6 inches) tall, 13 cm (5 inches) long
Care Level:Beginner
Temperament:Peaceful
Altum Angelfish
Pterophyllum altum
AngelfishSize:18+ cm (7+ inches) tall, 15 cm (6 inches) long
Care Level:Advanced
Temperament:Peaceful
Leopoldi Angelfish
Pterophyllum leopoldi
AngelfishSize:10 cm (4 inches) tall, 8 cm (3 inches) long
Care Level:Intermediate
Temperament:Semi-Aggressive
Zebra Angelfish
Pterophyllum scalare
AngelfishSize:15 cm (6 inches) tall, 13 cm (5 inches) long
Care Level:Beginner
Temperament:Peaceful
Marble Angelfish
Pterophyllum scalare
AngelfishSize:15 cm (6 inches) tall, 13 cm (5 inches) long
Care Level:Beginner
Temperament:Peaceful
Gold Angelfish
Pterophyllum scalare
AngelfishSize:15 cm (6 inches) tall, 13 cm (5 inches) long
Care Level:Beginner
Temperament:Peaceful
Black Angelfish
Pterophyllum scalare
AngelfishSize:15 cm (6 inches) tall, 13 cm (5 inches) long
Care Level:Beginner
Temperament:Peaceful
Veil Angelfish
Pterophyllum scalare
AngelfishSize:15 cm (6 inches) tall, 18+ cm (7+ inches) including fins
Care Level:Intermediate
Temperament:Peaceful
Platinum Angelfish
Pterophyllum scalare
AngelfishSize:15 cm (6 inches) tall, 13 cm (5 inches) long
Care Level:Beginner
Temperament:Peaceful
Koi Angelfish
Pterophyllum scalare
AngelfishSize:15 cm (6 inches) tall, 13 cm (5 inches) long
Care Level:Beginner
Temperament:Peaceful
Tiger Barb
Puntigrus tetrazona
BarbsSize:7 cm (3 inches)
Care Level:Beginner
Temperament:Semi-Aggressive
Cherry Barb
Puntius titteya
BarbsSize:5 cm (2 inches)
Care Level:Beginner
Temperament:Peaceful
Rosy Barb
Pethia conchonius
BarbsSize:8 cm (3 inches)
Care Level:Beginner
Temperament:Peaceful
Tinfoil Barb
Barbonymus schwanenfeldii
BarbsSize:25-35 cm (10-14 inches)
Care Level:Intermediate
Temperament:Peaceful
Gold Barb
Barbodes semifasciolatus
BarbsSize:7 cm (3 inches)
Care Level:Beginner
Temperament:Peaceful
Denison Barb
Sahyadria denisonii
BarbsSize:11-15 cm (4-6 inches)
Care Level:Intermediate
Temperament:Peaceful
Black Ruby Barb
Pethia nigrofasciata
BarbsSize:6 cm (2.5 inches)
Care Level:Beginner
Temperament:Peaceful
Checkerboard Barb
Oliotius oligolepis
BarbsSize:5 cm (2 inches)
Care Level:Beginner
Temperament:Peaceful
Pentazona Barb
Desmopuntius pentazona
BarbsSize:5 cm (2 inches)
Care Level:Beginner
Temperament:Peaceful
Odessa Barb
Pethia padamya
BarbsSize:6 cm (2.5 inches)
Care Level:Beginner
Temperament:Peaceful
Oscar Cichlid
Astronotus ocellatus
CichlidsSize:25-35 cm (10-14 inches)
Care Level:Intermediate
Temperament:Aggressive
Discus
Symphysodon aequifasciatus
CichlidsSize:15-20 cm (6-8 inches)
Care Level:Advanced
Temperament:Peaceful
Convict Cichlid
Amatitlania nigrofasciata
CichlidsSize:10-15 cm (4-6 inches)
Care Level:Beginner
Temperament:Aggressive
Firemouth Cichlid
Thorichthys meeki
CichlidsSize:12-15 cm (5-6 inches)
Care Level:Beginner
Temperament:Semi-aggressive
Severum
Heros severus
CichlidsSize:15-20 cm (6-8 inches)
Care Level:Beginner
Temperament:Peaceful
Jack Dempsey Cichlid
Rocio octofasciata
CichlidsSize:20-25 cm (8-10 inches)
Care Level:Intermediate
Temperament:Aggressive
Texas Cichlid
Herichthys cyanoguttatus
CichlidsSize:20-30 cm (8-12 inches)
Care Level:Advanced
Temperament:Very Aggressive
Blood Parrot Cichlid
Hybrid (Various Amphilophus species)
CichlidsSize:15-20 cm (6-8 inches)
Care Level:Beginner
Temperament:Peaceful
German Blue Ram
Mikrogeophagus ramirezi
CichlidsSize:5-7 cm (2-3 inches)
Care Level:Intermediate
Temperament:Peaceful
Bolivian Ram
Mikrogeophagus altispinosus
CichlidsSize:6-8 cm (2.5-3 inches)
Care Level:Beginner
Temperament:Peaceful
Cockatoo Dwarf Cichlid
Apistogramma cacatuoides
CichlidsSize:6-8 cm (2.5-3 inches)
Care Level:Intermediate
Temperament:Peaceful
Agassiz Dwarf Cichlid
Apistogramma agassizii
CichlidsSize:6-9 cm (2.5-3.5 inches)
Care Level:Advanced
Temperament:Peaceful
Blue Acara
Andinoacara pulcher
CichlidsSize:12-15 cm (5-6 inches)
Care Level:Beginner
Temperament:Peaceful
Green Terror
Andinoacara rivulatus
CichlidsSize:20-25 cm (8-10 inches)
Care Level:Advanced
Temperament:Aggressive
Redhead Geophagus
Geophagus surinamensis
CichlidsSize:20-25 cm (8-10 inches)
Care Level:Intermediate
Temperament:Peaceful
Uaru
Uaru amphiacanthoides
CichlidsSize:25-30 cm (10-12 inches)
Care Level:Advanced
Temperament:Peaceful
Leopard Frog Pleco
Peckoltia compta
CatfishSize:8-10 cm (3-4 inches)
Care Level:Advanced
Temperament:Peaceful
Vampire Pleco
Leporacanthicus heterodon
CatfishSize:25-30 cm (10-12 inches)
Care Level:Advanced
Temperament:Aggressive
Galaxy Pleco
Leporacanthicus galaxias
CatfishSize:20-25 cm (8-10 inches)
Care Level:Advanced
Temperament:Aggressive
Snowball Pleco
Hypancistrus inspector
CatfishSize:15-17 cm (6-7 inches)
Care Level:Advanced
Temperament:Peaceful
Clown Pleco
Panaqolus maccus
CatfishSize:8-10 cm (3-4 inches)
Care Level:Beginner
Temperament:Peaceful
Sultan Pleco
Leporacanthicus joselimai
CatfishSize:30-35 cm (12-14 inches)
Care Level:Advanced
Temperament:Aggressive
Green Phantom Pleco
Hemiancistrus subviridis
CatfishSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Sunshine Pleco
Scobinancistrus aureatus
CatfishSize:30-40 cm (12-16 inches)
Care Level:Advanced
Temperament:Aggressive
Red Lizard Whiptail
Rineloricaria sp. "Red"
CatfishSize:12-15 cm (5-6 inches)
Care Level:Intermediate
Temperament:Peaceful
Royal Whiptail
Sturisoma aureum
CatfishSize:20-25 cm (8-10 inches)
Care Level:Intermediate
Temperament:Peaceful
Panda Garra
Garra flavatra
CatfishSize:7-10 cm (3-4 inches)
Care Level:Beginner
Temperament:Peaceful
Zebra Otocinclus
Otocinclus cocama
CatfishSize:4-5 cm (1.5-2 inches)
Care Level:Intermediate
Temperament:Peaceful
Orange Seam Pleco
Hemiancistrus guahiborum
CatfishSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful
Blue Panaque
Panaque suttoni
CatfishSize:45+ cm (18+ inches)
Care Level:Advanced
Temperament:Peaceful
Chocolate Pleco
Pseudacanthicus sp. "Chocolate"
CatfishSize:30-35 cm (12-14 inches)
Care Level:Advanced
Temperament:Aggressive
Typhoon Pleco
Pseudacanthicus sp. "Typhoon"
CatfishSize:30-40 cm (12-16 inches)
Care Level:Advanced
Temperament:Aggressive
Tiger Pleco
Panaqolus sp. "Tiger"
CatfishSize:12-15 cm (5-6 inches)
Care Level:Intermediate
Temperament:Peaceful
Marble Sailfin Pleco
Pterygoplichthys joselimaianus
CatfishSize:35+ cm (14+ inches)
Care Level:Intermediate
Temperament:Peaceful
Flash Pleco
Panaqolus albomaculatus
CatfishSize:10-12 cm (4-5 inches)
Care Level:Beginner
Temperament:Peaceful
Mega Clown Pleco
Hypancistrus sp. "Mega Clown"
CatfishSize:15-18 cm (6-7 inches)
Care Level:Intermediate
Temperament:Peaceful