Beginner – IntermediateEmerald Dwarf Danio
Danio erythromicron
- Adult size
- up to 4 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 20–25 °C
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Beginner – Intermediate
Beginner – IntermediateEmerald Eye Rasbora
Brevibora dorsiocellata
- Adult size
- up to 3.5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–26 °C
Beginner – IntermediateEmperor Loach
Botia udomritthiruji
- Adult size
- up to 15 cm
- Aquarium size
- 160 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 23–28 °C
BeginnerEmperor Tetra
Nematobrycon palmeri
- Adult size
- up to 4.5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 22–26 °C
Beginner – IntermediateEmpire Gudgeon
Hypseleotris compressa
- Adult size
- up to 12 cm
- Aquarium size
- 100 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 20–35 °C
Beginner – IntermediateEthereal Danio
Danionella cerebrum
- Adult size
- up to 1.4 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–30 °C
Beginner – IntermediateEurasian Minnow
Phoxinus phoxinus
- Adult size
- up to 10 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 11–20 °C
IntermediateEureka Red Peacock Cichlid
Aulonocara jacobfreibergi eureka
- Adult size
- up to 15 cm
- Aquarium size
- 200 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 23–28 °C
Beginner – IntermediateEuropean Bitterling
Rhodeus amarus
- Adult size
- up to 10 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 12–21 °C
Beginner – IntermediateEuropean Bullhead Goby
Cottus gobio
- Adult size
- up to 10 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 2–20 °C
BeginnerEversi Corydoras
Corydoras eversi
- Adult size
- up to 5.5 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 21–25 °C
IntermediateExclamation Mark Tetra
Bryconella pallidifrons
- Adult size
- up to 3.5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 25–27 °C
Beginner – IntermediateExclamation Point Rasbora
Boraras urophthalmoides
- Adult size
- up to 2 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 24–27 °C
Beginner – IntermediateExquisite Rainbowfish
Melanotaenia exquisita
- Adult size
- up to 9 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 24–30 °C
AdvancedFahaka Pufferfish
Tetraodon lineatus
- Adult size
- up to 45 cm
- Aquarium size
- 900 L or larger
- Temperament
- Aggressive
- Temp
- 22–26 °C
Beginner – IntermediateFairy Cichlid
Neolamprologus brichardi
- Adult size
- up to 9 cm
- Aquarium size
- 200 L or larger
- Temperament
- Semi-Aggressive
- Temp
- 23–26 °C
Beginner – IntermediateFairy Corydoras
Corydoras atropersonatus
- Adult size
- up to 5 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 21.1–23.9 °C
Beginner – IntermediateFalse Bandit Corydoras
Corydoras melini
- Adult size
- up to 5 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–26 °C
Beginner – IntermediateFalse Giant Danio
Devario affinis
- Adult size
- up to 8 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Middle swimmer
- Temp
- 22–27 °C
Intermediate – AdvancedFalse Green Terror
Andinoacara rivulatus
- Adult size
- up to 30 cm
- Aquarium size
- 300 L or larger
- Temperament
- Aggressive
- Zone
- Middle swimmer
- Temp
- 20–24 °C
Beginner – IntermediateFalse Network Corydoras
Corydoras sodalis
- Adult size
- up to 5 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–26 °C
Beginner – IntermediateFalse Siamese Algae Eater
Garra cambodgiensis
- Adult size
- up to 15 cm
- Aquarium size
- 160 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 20–26 °C
IntermediateFalse Tiger Knifefish
Gymnotus javari
- Adult size
- up to 20 cm
- Aquarium size
- 240 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 24–28 °C
IntermediateFeatherfin Catfish
Synodontis eupterus
- Adult size
- up to 30 cm
- Aquarium size
- 300 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–27 °C
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