Freshwater Fish Database
Browse 35 popular freshwater species with tank size requirements, water parameters, and care information.
Showing 35 of 35 species
Betta Fish
Betta splendens
Min Tank: 5 gal
Max Size: 3"
Temp: 76-82°F
pH: 6.5-7.5
Bioload: low
Diet: carnivore
Schooling: No
Care: easy
Neon Tetra
Paracheirodon innesi
Min Tank: 10 gal
Max Size: 1.5"
Temp: 70-81°F
pH: 6-7
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: easy
Cardinal Tetra
Paracheirodon axelrodi
Min Tank: 10 gal
Max Size: 2"
Temp: 73-81°F
pH: 5.5-7
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: moderate
Guppy
Poecilia reticulata
Min Tank: 10 gal
Max Size: 2"
Temp: 72-82°F
pH: 6.8-7.8
Bioload: low
Diet: omnivore
Schooling: No
Care: easy
Platy
Xiphophorus maculatus
Min Tank: 10 gal
Max Size: 2.5"
Temp: 70-80°F
pH: 7-8
Bioload: low
Diet: omnivore
Schooling: No
Care: easy
Molly
Poecilia sphenops
Min Tank: 20 gal
Max Size: 4"
Temp: 72-82°F
pH: 7-8.5
Bioload: medium
Diet: omnivore
Schooling: No
Care: easy
Corydoras Catfish
Corydoras spp.
Min Tank: 15 gal
Max Size: 2.5"
Temp: 72-79°F
pH: 6-7.5
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: easy
Bristlenose Pleco
Ancistrus spp.
Min Tank: 20 gal
Max Size: 5"
Temp: 73-81°F
pH: 6.5-7.5
Bioload: medium
Diet: herbivore
Schooling: No
Care: easy
Cherry Barb
Puntius titteya
Min Tank: 20 gal
Max Size: 2"
Temp: 73-81°F
pH: 6-7
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: easy
Zebra Danio
Danio rerio
Min Tank: 10 gal
Max Size: 2"
Temp: 64-77°F
pH: 6.5-7.5
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: easy
Harlequin Rasbora
Trigonostigma heteromorpha
Min Tank: 10 gal
Max Size: 2"
Temp: 72-81°F
pH: 6-7.5
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: easy
Dwarf Gourami
Trichogaster lalius
Min Tank: 10 gal
Max Size: 3.5"
Temp: 72-82°F
pH: 6-7.5
Bioload: low
Diet: omnivore
Schooling: No
Care: moderate
Angelfish
Pterophyllum scalare
Min Tank: 30 gal
Max Size: 6"
Temp: 76-84°F
pH: 6-7.5
Bioload: medium
Diet: omnivore
Schooling: No
Care: moderate
German Blue Ram
Mikrogeophagus ramirezi
Min Tank: 20 gal
Max Size: 3"
Temp: 78-85°F
pH: 5.5-7
Bioload: low
Diet: omnivore
Schooling: No
Care: moderate
Kuhli Loach
Pangio kuhlii
Min Tank: 15 gal
Max Size: 4"
Temp: 73-86°F
pH: 5.5-7
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: moderate
Mystery Snail
Pomacea bridgesii
Min Tank: 5 gal
Max Size: 2"
Temp: 68-84°F
pH: 7-8
Bioload: low
Diet: omnivore
Schooling: No
Care: easy
Nerite Snail
Neritina spp.
Min Tank: 5 gal
Max Size: 1"
Temp: 72-78°F
pH: 7-8.5
Bioload: low
Diet: herbivore
Schooling: No
Care: easy
Cherry Shrimp
Neocaridina davidi
Min Tank: 5 gal
Max Size: 1.5"
Temp: 65-80°F
pH: 6.5-8
Bioload: low
Diet: omnivore
Schooling: No
Care: easy
Amano Shrimp
Caridina multidentata
Min Tank: 10 gal
Max Size: 2"
Temp: 70-80°F
pH: 6.5-7.5
Bioload: low
Diet: omnivore
Schooling: No
Care: easy
Otocinclus
Otocinclus spp.
Min Tank: 10 gal
Max Size: 2"
Temp: 72-79°F
pH: 6-7.5
Bioload: low
Diet: herbivore
Schooling: Yes (6+)
Care: moderate
Rummy Nose Tetra
Hemigrammus rhodostomus
Min Tank: 20 gal
Max Size: 2.5"
Temp: 75-84°F
pH: 5.5-7
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: moderate
Ember Tetra
Hyphessobrycon amandae
Min Tank: 10 gal
Max Size: 1"
Temp: 73-84°F
pH: 5.5-7
Bioload: low
Diet: omnivore
Schooling: Yes (8+)
Care: easy
Pearl Gourami
Trichopodus leerii
Min Tank: 30 gal
Max Size: 5"
Temp: 77-82°F
pH: 6-7.5
Bioload: medium
Diet: omnivore
Schooling: No
Care: moderate
Swordtail
Xiphophorus hellerii
Min Tank: 20 gal
Max Size: 5"
Temp: 72-82°F
pH: 7-8
Bioload: medium
Diet: omnivore
Schooling: No
Care: easy
Endler's Livebearer
Poecilia wingei
Min Tank: 10 gal
Max Size: 1.5"
Temp: 72-82°F
pH: 6.5-8
Bioload: low
Diet: omnivore
Schooling: No
Care: easy
Pygmy Corydoras
Corydoras pygmaeus
Min Tank: 10 gal
Max Size: 1"
Temp: 72-79°F
pH: 6-7.5
Bioload: low
Diet: omnivore
Schooling: Yes (8+)
Care: easy
Clown Pleco
Panaqolus maccus
Min Tank: 20 gal
Max Size: 3.5"
Temp: 73-82°F
pH: 6.5-7.5
Bioload: low
Diet: herbivore
Schooling: No
Care: easy
Hillstream Loach
Sewellia lineolata
Min Tank: 20 gal
Max Size: 3"
Temp: 68-75°F
pH: 6.5-7.5
Bioload: low
Diet: herbivore
Schooling: Yes (3+)
Care: moderate
White Cloud Minnow
Tanichthys albonubes
Min Tank: 10 gal
Max Size: 1.5"
Temp: 60-72°F
pH: 6-8
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: easy
Pea Puffer
Carinotetraodon travancoricus
Min Tank: 10 gal
Max Size: 1"
Temp: 74-82°F
pH: 6.5-7.5
Bioload: low
Diet: carnivore
Schooling: No
Care: moderate
Honey Gourami
Trichogaster chuna
Min Tank: 10 gal
Max Size: 2"
Temp: 72-82°F
pH: 6-7.5
Bioload: low
Diet: omnivore
Schooling: No
Care: easy
Celestial Pearl Danio
Danio margaritatus
Min Tank: 10 gal
Max Size: 1"
Temp: 72-79°F
pH: 6.5-7.5
Bioload: low
Diet: omnivore
Schooling: Yes (6+)
Care: moderate
Siamese Algae Eater
Crossocheilus oblongus
Min Tank: 30 gal
Max Size: 6"
Temp: 75-80°F
pH: 6.5-7.5
Bioload: medium
Diet: herbivore
Schooling: No
Care: easy
Apistogramma
Apistogramma spp.
Min Tank: 20 gal
Max Size: 3.5"
Temp: 76-84°F
pH: 5-7
Bioload: low
Diet: carnivore
Schooling: No
Care: moderate
Sparkling Gourami
Trichopsis pumila
Min Tank: 10 gal
Max Size: 1.5"
Temp: 72-80°F
pH: 6-7.5
Bioload: low
Diet: omnivore
Schooling: No
Care: moderate