Beginner – IntermediateBlack Venezuela Corydoras
Corydoras schultzei
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 20 US gal (76 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–81°F (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
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediateBlack-belt Tetra
Hemigrammus kuroobi
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 16 US gal (60 L) or larger
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 75–82°F (24–28°C)
Intermediate – AdvancedBlack-winged Hatchetfish
Carnegiella marthae
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 68–82°F (20–28°C)
IntermediateBlackberry Silver Dollar
Myloplus schomburgkii
- Adult size
- ≤ 15.7" (≤ 40 cm)
- Aquarium size
- 264 US gal (1000 L) or larger / ≥ 78.7" (≥ 200 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
Beginner – IntermediateBlackfin Pearl Killifish
Austrolebias nigripinnis
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 5 US gal (20 L) or larger / ≥ 11.8" (≥ 30 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 63–73°F (17–23°C)
Beginner – IntermediateBlackline Tail Tetra
Moenkhausia costae
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
IntermediateBlacknose Butterfly Barb
Enteromius candens
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Aquarium size
- 13 US gal (50 L) or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 75–79°F (24–26°C)
Beginner – IntermediateBlackstripe Corydoras
Hoplisoma bondi
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 19.7" (≥ 50 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Beginner – IntermediateBlacktop Corydoras
Corydoras acutus
- Adult size
- ≤ 2.2" (≤ 5.5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 27.6" (≥ 70 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 71–82°F (21.7–27.8°C)
Beginner – IntermediateBleeding Blue Tetra
Hyphessobrycon margitae
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–79°F (23–26°C)
Beginner – IntermediateBleeding Heart Tetra
Hyphessobrycon erythrostigma
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 21 US gal (81 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–81°F (22–27°C)
Beginner – IntermediateBlood Tailed Danio
Devario annandalei
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 70–79°F (21–26°C)
BeginnerBloodfin Tetra
Aphyocharax anisitsi
- Adult size
- ≤ 2.2" (≤ 5.5 cm)
- Aquarium size
- 18 US gal (70 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 63–81°F (17–27°C)
IntermediateBlue Botia
Yasuhikotakia modesta
- Adult size
- ≤ 7.1" (≤ 18 cm)
- Aquarium size
- 159 US gal (600 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 72–86°F (22–30°C)
Beginner – IntermediateBlue Cheek Dwarf Cichlid
Apistogramma eunotus
- Adult size
- ≤ 2.2" (≤ 5.5 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 73–84°F (23–29°C)
Beginner – IntermediateBlue Danio
Danio kerri
- Adult size
- ≤ 1.8" (≤ 4.5 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–77°F (22–25°C)
IntermediateBlue Diamond Tetra
Alestopetersius smykalai
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 42 US gal (160 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
IntermediateBlue Dolphin Cichlid
Cyrtocara moorii
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 159 US gal (600 L) or larger / ≥ 70.9" (≥ 180 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 73–82°F (23–28°C)
Beginner – IntermediateBlue Eyed Congo Tetra
Phenacogrammus aurantiacus
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Intermediate – AdvancedBlue Eyed Plecostomus
Panaque cochliodon
- Adult size
- ≤ 11.8" (≤ 30 cm)
- Aquarium size
- 127 US gal (480 L) or larger / ≥ 78.7" (≥ 200 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediateBlue Fin Hillstream Loach
Gastromyzon aeroides
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 20 US gal (75 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 68–75°F (20–24°C)
Beginner – IntermediateBlue Flash Glass Tetra
Heterocharax vigulatus
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Beginner – IntermediateBlue Moon Danio
Devario xyrops
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 66 US gal (250 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 64–79°F (18–26°C)