Aquarium Fish Database

Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.

Beginner – Intermediate

Black Venezuela Corydoras

Corydoras schultzei

Adult size
up to 6 cm
Aquarium size
60 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
22–27 °C
Beginner – Intermediate

Black-Bellied Limia

Limia melanogaster

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–28 °C
Beginner – Intermediate

Black-belt Tetra

Hemigrammus kuroobi

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
24–28 °C
Intermediate – Advanced

Black-winged Hatchetfish

Carnegiella marthae

Adult size
up to 3.5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Top swimmer
Temp
20–28 °C
Intermediate

Blackberry Silver Dollar

Myloplus schomburgkii

Adult size
up to 40 cm
Aquarium size
300 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–27 °C
Beginner – Intermediate

Blackfin Pearl Killifish

Austrolebias nigripinnis

Adult size
up to 5 cm
Aquarium size
120 L or larger
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
17–23 °C
Beginner – Intermediate

Blackline Tail Tetra

Moenkhausia costae

Adult size
up to 6 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–26 °C
Intermediate

Blacknose Butterfly Barb

Enteromius candens

Adult size
up to 3 cm
Aquarium size
30 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
24–26 °C
Beginner – Intermediate

Blackstripe Corydoras

Corydoras bondi

Adult size
up to 5 cm
Aquarium size
60 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
22–26 °C
Beginner – Intermediate

Blacktop Corydoras

Corydoras acutus

Adult size
up to 5.5 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
21.7–27.8 °C
Beginner – Intermediate

Bleeding Blue Tetra

Hyphessobrycon margitae

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–26 °C
Beginner – Intermediate

Bleeding Heart Tetra

Hyphessobrycon erythrostigma

Adult size
up to 8 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
22–27 °C
Beginner – Intermediate

Blood Tailed Danio

Devario annandalei

Adult size
up to 10 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
21–26 °C
Beginner

Bloodfin Tetra

Aphyocharax anisitsi

Adult size
up to 5.5 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
17–27 °C
Intermediate

Blue Botia

Yasuhikotakia modesta

Adult size
up to 18 cm
Aquarium size
240 L or larger
Temperament
Semi-Aggressive
Zone
Bottom dweller
Temp
22–30 °C
Beginner – Intermediate

Blue Cheek Dwarf Cichlid

Apistogramma eunotus

Adult size
up to 5.5 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
23–29 °C
Beginner – Intermediate

Blue Danio

Danio kerri

Adult size
up to 4.5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–25 °C
Intermediate

Blue Diamond Tetra

Alestopetersius smykalai

Adult size
up to 6 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–27 °C
Intermediate

Blue Dolphin Cichlid

Cyrtocara moorii

Adult size
up to 25 cm
Aquarium size
300 L or larger
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
23–28 °C
Beginner – Intermediate

Blue Eyed Congo Tetra

Phenacogrammus aurantiacus

Adult size
up to 10 cm
Aquarium size
120 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–27 °C
Intermediate – Advanced

Blue Eyed Plecostomus

Panaque cochliodon

Adult size
up to 30 cm
Aquarium size
300 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
22–28 °C
Beginner – Intermediate

Blue Fin Hillstream Loach

Gastromyzon aeroides

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
20–24 °C
Beginner – Intermediate

Blue Flash Glass Tetra

Heterocharax vigulatus

Adult size
up to 4 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–28 °C
Beginner – Intermediate

Blue Moon Danio

Devario xyrops

Adult size
up to 8 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
18–26 °C
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