Aquarium Fish Database

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

Intermediate

Blue Neon Cichlid

Paracyprichromis nigripinnis

Adult size
≤ 11 cm (≤ 4.3 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
24–27 °C
Intermediate – Advanced

Blue Neon Goby

Stiphodon atropurpureus

Adult size
4–5 cm (1.6–2 in)
Aquarium size
54 L or larger / ≥ 60 cm (≥ 23.6 in) minimum length
Temperament
Peaceful
Zone
Bottom dweller
Temp
22–26 °C
Beginner – Intermediate

Blue Panchax

Aplocheilus panchax

Adult size
≤ 8 cm (≤ 3.1 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
20–26 °C
Beginner – Intermediate

Blue Panda Apistogramma

Apistogramma panduro

Adult size
≤ 7.5 cm (≤ 3 in)
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
21–28 °C
Beginner

Blue Purple Emperor Tetra

Inpaichthys kerri

Adult size
≤ 4 cm (≤ 1.6 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–26 °C
Intermediate

Blue Scraper Cichlid

Neochromis omnicaeruleus

Adult size
≤ 12 cm (≤ 4.7 in)
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
23–27 °C
Intermediate

Blue Spot African Tetra

Brycinus poptae

Adult size
≤ 16 cm (≤ 6.3 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
21–27 °C
Intermediate – Advanced

Blue Spotted Hill Trout

Barilius bakeri

Adult size
≤ 15 cm (≤ 5.9 in)
Temperament
Semi-Aggressive
Zone
Middle to top swimmer
Temp
17–26 °C
Beginner – Intermediate

Blue Striped Rivulus Killifish

Rivulus xiphidius

Adult size
≤ 4.5 cm (≤ 1.8 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–25 °C
Beginner – Intermediate

Blue Tetra

Tyttocharax cochui

Adult size
≤ 2 cm (≤ 0.8 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–26 °C
Beginner – Intermediate

Blue-purple Croaking Tetra

Mimagoniates barberi

Adult size
≤ 4 cm (≤ 1.6 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
20–24 °C
Beginner – Intermediate

Blueberry Tetra

Hyphessobrycon wadai

Adult size
≤ 2.5 cm (≤ 1 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
20–26 °C
Beginner – Intermediate

Bluefin Killifish

Lucania goodei

Adult size
≤ 5 cm (≤ 2 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
12–22 °C
Beginner – Intermediate

Bluefin Notho

Nothobranchius rachovii

Adult size
≤ 6 cm (≤ 2.4 in)
Temperament
Peaceful
Zone
Bottom dweller
Temp
20–23 °C
Beginner

Boesemans Rainbowfish

Melanotaenia boesemani

Adult size
≤ 13 cm (≤ 5.1 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
26–30 °C
Beginner – Intermediate

Bolivian Ram Cichlid

Mikrogeophagus altispinosus

Adult size
≤ 8 cm (≤ 3.1 in)
Temperament
Peaceful
Zone
Middle swimmer
Temp
23–25 °C
Intermediate

Bonti Rainbowfish

Telmatherina bonti

Adult size
≤ 8 cm (≤ 3.1 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–24 °C
Intermediate

Bonylip Barb

Osteocheilus vittatus

Adult size
≤ 32 cm (≤ 12.6 in)
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
22–26 °C
Beginner – Intermediate

Borneo Red Fin Silver Shark

Cyclocheilichthys janthochir

Adult size
≤ 20 cm (≤ 7.9 in)
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
21–26 °C
Intermediate – Advanced

Borneo Redline Halfbeak

Hemirhamphodon tengah

Adult size
≤ 6 cm (≤ 2.4 in)
Temperament
Peaceful
Zone
Top swimmer
Temp
24–27 °C
Beginner – Intermediate

Boulenger’s Featherfin Tetra

Bryconaethiops boulengeri

Adult size
≤ 25 cm (≤ 9.8 in)
Aquarium size
280 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–26 °C
Beginner – Intermediate

Brevirostris Corydoras

Corydoras brevirostris

Adult size
≤ 5 cm (≤ 2 in)
Temperament
Peaceful
Zone
Bottom dweller
Temp
20–26 °C
Intermediate

Brichard’s Slender Cichlid

Teleogramma brichardi

Adult size
≤ 10 cm (≤ 3.9 in)
Aquarium size
90 L or larger
Temperament
Semi-Aggressive
Zone
Bottom dweller
Temp
20–23 °C
Intermediate

Brittanichthys Axelrodi Tetra

Brittanichthys axelrodi

Adult size
≤ 3 cm (≤ 1.2 in)
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
24–27 °C
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