Beginner – IntermediateBlack Venezuela Corydoras
Corydoras schultzei
- Adult size
- ≤ 6 cm (≤ 2.4 in)
- Aquarium size
- 76 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–27 °C
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Beginner – Intermediate
Beginner – IntermediateBlack-Bellied Limia
Limia melanogaster
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 54 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–28 °C
Beginner – IntermediateBlack-belt Tetra
Hemigrammus kuroobi
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 24–28 °C
Intermediate – AdvancedBlack-winged Hatchetfish
Carnegiella marthae
- Adult size
- ≤ 3.5 cm (≤ 1.4 in)
- Aquarium size
- 54 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 20–28 °C
IntermediateBlackberry Silver Dollar
Myloplus schomburgkii
- Adult size
- ≤ 40 cm (≤ 15.7 in)
- Aquarium size
- 1000 L or larger / ≥ 200 cm (≥ 78.7 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–27 °C
Beginner – IntermediateBlackfin Pearl Killifish
Austrolebias nigripinnis
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 20 L or larger / ≥ 30 cm (≥ 11.8 in) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 17–23 °C
Beginner – IntermediateBlackline Tail Tetra
Moenkhausia costae
- Adult size
- ≤ 6 cm (≤ 2.4 in)
- Aquarium size
- 80 L or larger / ≥ 80 cm (≥ 31.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–26 °C
IntermediateBlacknose Butterfly Barb
Enteromius candens
- Adult size
- ≤ 3 cm (≤ 1.2 in)
- Aquarium size
- 50 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 24–26 °C
Beginner – IntermediateBlackstripe Corydoras
Corydoras bondi
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–26 °C
Beginner – IntermediateBlacktop Corydoras
Corydoras acutus
- Adult size
- ≤ 5.5 cm (≤ 2.2 in)
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 21.7–27.8 °C
Beginner – IntermediateBleeding Blue Tetra
Hyphessobrycon margitae
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 80 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–26 °C
Beginner – IntermediateBleeding Heart Tetra
Hyphessobrycon erythrostigma
- Adult size
- ≤ 8 cm (≤ 3.1 in)
- Aquarium size
- 81 L or larger / ≥ 90 cm (≥ 35.4 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 22–27 °C
Beginner – IntermediateBlood Tailed Danio
Devario annandalei
- Adult size
- ≤ 10 cm (≤ 3.9 in)
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 21–26 °C
BeginnerBloodfin Tetra
Aphyocharax anisitsi
- Adult size
- ≤ 5.5 cm (≤ 2.2 in)
- Aquarium size
- 70 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 17–27 °C
IntermediateBlue Botia
Yasuhikotakia modesta
- Adult size
- ≤ 18 cm (≤ 7.1 in)
- Aquarium size
- 600 L or larger / ≥ 150 cm (≥ 59.1 in) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 22–30 °C
Beginner – IntermediateBlue Cheek Dwarf Cichlid
Apistogramma eunotus
- Adult size
- ≤ 5.5 cm (≤ 2.2 in)
- Aquarium size
- 100 L or larger / ≥ 80 cm (≥ 31.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 23–29 °C
Beginner – IntermediateBlue Danio
Danio kerri
- Adult size
- ≤ 4.5 cm (≤ 1.8 in)
- Aquarium size
- 112 L or larger / ≥ 80 cm (≥ 31.5 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–25 °C
IntermediateBlue Diamond Tetra
Alestopetersius smykalai
- Adult size
- ≤ 6 cm (≤ 2.4 in)
- Aquarium size
- 160 L or larger / ≥ 120 cm (≥ 47.2 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–27 °C
IntermediateBlue Dolphin Cichlid
Cyrtocara moorii
- Adult size
- ≤ 25 cm (≤ 9.8 in)
- Aquarium size
- 600 L or larger / ≥ 180 cm (≥ 70.9 in) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 23–28 °C
Beginner – IntermediateBlue Eyed Congo Tetra
Phenacogrammus aurantiacus
- Adult size
- ≤ 10 cm (≤ 3.9 in)
- Aquarium size
- 200 L or larger / ≥ 100 cm (≥ 39.4 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–27 °C
Intermediate – AdvancedBlue Eyed Plecostomus
Panaque cochliodon
- Adult size
- ≤ 30 cm (≤ 11.8 in)
- Aquarium size
- 480 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–28 °C
Beginner – IntermediateBlue Fin Hillstream Loach
Gastromyzon aeroides
- Adult size
- ≤ 5 cm (≤ 2 in)
- Aquarium size
- 75 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 20–24 °C
Beginner – IntermediateBlue Flash Glass Tetra
Heterocharax vigulatus
- Adult size
- ≤ 4 cm (≤ 1.6 in)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–28 °C
Beginner – IntermediateBlue Moon Danio
Devario xyrops
- Adult size
- ≤ 8 cm (≤ 3.1 in)
- Aquarium size
- 250 L or larger / ≥ 120 cm (≥ 47.2 in) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 18–26 °C