Eight Banded False Barb
Eirmotus octozona
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–79°F (23–26°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Eilyos Tetra
Hyphessobrycon eilyos
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–82°F (23–28°C)
Electric Blue Hap
Sciaenochromis ahli
- Adult size
- ≤ 7.9" (≤ 20 cm)
- Aquarium size
- 66 US gal (250 L) or larger
- Temperament
- Semi-Aggressive
- Zone
- Middle swimmer
- Temp
- 75–82°F (24–28°C)
Electric Blue Johanni Cichlid
Pseudotropheus johannii
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 37 US gal (140 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 73–82°F (23–28°C)
Electric Yellow Cichlid
Labidochromis caeruleus
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 40 US gal (150 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 73–79°F (23–26°C)
Elegant Corydoras
Gastrodermus elegans
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Elegant Pencilfish
Nannostomus limatus
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 15 US gal (57 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Elizabeth’s Apistogramma
Apistogramma elizabethae
- Adult size
- ≤ 2" (≤ 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
- 72–84°F (22–29°C)
Emerald Betta
Betta smaragdina
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Top swimmer
- Temp
- 72–79°F (22–26°C)
Emerald Brochis Corydoras
Brochis splendens
- Adult size
- ≤ 3.5" (≤ 9 cm)
- Aquarium size
- 64 US gal (243 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–81°F (20–27°C)
Emerald Dwarf Danio
Danio erythromicron
- Adult size
- ≤ 1.6" (≤ 4 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 68–77°F (20–25°C)
Emerald Eye Rasbora
Brevibora dorsiocellata
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Emperor Loach
Botia udomritthiruji
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 64 US gal (243 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 73–82°F (23–28°C)
Emperor Tetra
Nematobrycon palmeri
- Adult size
- ≤ 1.8" (≤ 4.5 cm)
- Aquarium size
- 21 US gal (81 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–79°F (22–26°C)
Empire Gudgeon
Hypseleotris compressa
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–95°F (20–35°C)
Ethereal Danio
Danionella cerebrum
- Adult size
- ≤ 0.6" (≤ 1.4 cm)
- Aquarium size
- 11 US gal (40 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–86°F (22–30°C)
Eurasian Minnow
Phoxinus phoxinus
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 45 US gal (170 L) or larger / ≥ 43.3" (≥ 110 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 52–68°F (11–20°C)
Eureka Red Peacock Cichlid
Aulonocara jacobfreibergi
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 66 US gal (250 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 73–82°F (23–28°C)
European Bitterling
Rhodeus amarus
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 79 US gal (300 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 54–70°F (12–21°C)
European Bullhead Goby
Cottus gobio
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 36–68°F (2–20°C)
Eversi Corydoras
Hoplisoma eversi
- Adult size
- ≤ 2.2" (≤ 5.5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 70–77°F (21–25°C)
Exclamation Mark Tetra
Bryconella pallidifrons
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 26 US gal (100 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 77–81°F (25–27°C)
Exclamation Point Rasbora
Boraras urophthalmoides
- Adult size
- ≤ 0.8" (≤ 2 cm)
- Aquarium size
- 11 US gal (40 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–81°F (24–27°C)
Exquisite Rainbowfish
Melanotaenia exquisita
- Adult size
- ≤ 3.5" (≤ 9 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–86°F (24–30°C)
