Blue Neon Cichlid
Paracyprichromis nigripinnis
- Adult size
- ≤ 4.3" (≤ 11 cm)
- Aquarium size
- 66 US gal (250 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–81°F (24–27°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Blue Neon Goby
Stiphodon atropurpureus
- Adult size
- 1.6–2" (4–5 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Blue Panchax
Aplocheilus panchax
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–79°F (20–26°C)
Blue Panda Apistogramma
Apistogramma panduro
- Adult size
- ≤ 3" (≤ 7.5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 70–82°F (21–28°C)
Blue Purple Emperor Tetra
Inpaichthys kerri
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Blue Scraper Cichlid
Neochromis omnicaeruleus
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 79 US gal (300 L) or larger / ≥ 49.2" (≥ 125 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 73–81°F (23–27°C)
Blue Spot African Tetra
Brycinus poptae
- Adult size
- ≤ 6.3" (≤ 16 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 70–81°F (21–27°C)
Blue Spotted Hill Trout
Barilius bakeri
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 119 US gal (450 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 63–79°F (17–26°C)
Blue Striped Rivulus Killifish
Rivulus xiphidius
- Adult size
- ≤ 1.8" (≤ 4.5 cm)
- Aquarium size
- 5 US gal (20 L) or larger / ≥ 15.7" (≥ 40 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–77°F (22–25°C)
Blue Tetra
Tyttocharax cochui
- Adult size
- ≤ 0.8" (≤ 2 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–79°F (23–26°C)
Blue-purple Croaking Tetra
Mimagoniates barberi
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 40 US gal (150 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–75°F (20–24°C)
Blueberry Tetra
Hyphessobrycon wadai
- Adult size
- ≤ 1" (≤ 2.5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–79°F (20–26°C)
Bluefin Killifish
Lucania goodei
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 11 US gal (40 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 54–72°F (12–22°C)
Bluefin Notho
Nothobranchius rachovii
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–73°F (20–23°C)
Boesemans Rainbowfish
Melanotaenia boesemani
- Adult size
- ≤ 5.1" (≤ 13 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 79–86°F (26–30°C)
Bolivian Ram Cichlid
Mikrogeophagus altispinosus
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 73–77°F (23–25°C)
Bonti Rainbowfish
Telmatherina bonti
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 55 US gal (208 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–75°F (22–24°C)
Bonylip Barb
Osteocheilus vittatus
- Adult size
- ≤ 12.6" (≤ 32 cm)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Borneo Red Fin Silver Shark
Cyclocheilichthys janthochir
- Adult size
- ≤ 7.9" (≤ 20 cm)
- Aquarium size
- 132 US gal (500 L) or larger / ≥ 70.9" (≥ 180 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 70–79°F (21–26°C)
Borneo Redline Halfbeak
Hemirhamphodon tengah
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Top swimmer
- Temp
- 75–81°F (24–27°C)
Boulenger’s Featherfin Tetra
Bryconaethiops boulengeri
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 74 US gal (280 L) or larger / ≥ 98.4" (≥ 250 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Brevirostris Corydoras
Corydoras brevirostris
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–79°F (20–26°C)
Brichard’s Slender Cichlid
Teleogramma brichardi
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 24 US gal (90 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 68–73°F (20–23°C)
Brittanichthys Axelrodi Tetra
Brittanichthys axelrodi
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–81°F (24–27°C)
