Aquarium Fish Database

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

Intermediate – Advanced

Dwarf Ember Barbs

Barboides gracilis

Adult size
up to 1.8 cm
Aquarium size
30 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
22–26 °C
Intermediate

Dwarf Flag Cichlid

Laetacara curviceps

Adult size
up to 7 cm
Aquarium size
120 L or larger
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
22–26 °C
Beginner – Intermediate

Dwarf Halfbeak

Dermogenys siamensis

Adult size
up to 7 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Top swimmer
Temp
24–28 °C
Beginner – Intermediate

Dwarf Neon Rainbowfish

Melanotaenia praecox

Adult size
up to 6 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle swimmer
Temp
22–26 °C
Beginner

Dwarf Pencilfish

Nannostomus marginatus

Adult size
up to 3.5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–26 °C
Beginner – Intermediate

Dwarf Pipefish

Doryichthys deokhatoides

Adult size
up to 18.5 cm
Aquarium size
240 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
24–28 °C
Beginner – Intermediate

Dwarf Pleco

Parotocinclus haroldoi

Adult size
up to 4 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
25–29 °C
Intermediate

Dwarf Pufferfish

Carinotetraodon travancoricus

Adult size
up to 3.5 cm
Aquarium size
120 L or larger
Temperament
Aggressive
Zone
Middle swimmer
Temp
22–27 °C
Intermediate

Dwarf Rasbora

Boraras maculatus

Adult size
up to 2.5 cm
Aquarium size
30 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–26 °C
Intermediate

Dwarf Snakehead

Channa gachua

Adult size
up to 28 cm
Aquarium size
300 L or larger
Temperament
Semi-Aggressive
Zone
Middle swimmer
Temp
22–28 °C
Beginner – Intermediate

Dwarf Spotted Danio

Danio nigrofasciatus

Adult size
up to 4 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–27 °C
Beginner – Intermediate

Eastern Mosquitofish

Gambusia holbrooki

Adult size
up to 8 cm
Aquarium size
80 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
15–35 °C
Beginner – Intermediate

Eggers Killifish

Nothobranchius eggersi

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Top swimmer
Temp
22–26 °C
Intermediate

Eight Banded False Barb

Eirmotus octozona

Adult size
up to 3.5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–26 °C
Beginner – Intermediate

Eilyos Tetra

Hyphessobrycon eilyos

Adult size
up to 3 cm
Aquarium size
30 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
23–28 °C
Intermediate

Electric Blue Hap

Sciaenochromis ahli

Adult size
up to 20 cm
Aquarium size
240 L or larger
Temperament
Semi-Aggressive
Zone
Middle swimmer
Temp
24–28 °C
Intermediate – Advanced

Electric Blue Johanni Cichlid

Pseudotropheus johannii

Adult size
up to 10 cm
Aquarium size
200 L or larger
Temperament
Aggressive
Zone
Bottom to middle swimmer
Temp
23–28 °C
Beginner – Intermediate

Electric Yellow Cichlid

Labidochromis caeruleus

Adult size
up to 10 cm
Aquarium size
200 L or larger
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
23–26 °C
Beginner – Intermediate

Elegant Corydoras

Corydoras elegans

Adult size
up to 5 cm
Aquarium size
60 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
22–26 °C
Intermediate

Elegant Pencilfish

Nannostomus limatus

Adult size
up to 5 cm
Aquarium size
45 L or larger
Temperament
Peaceful
Zone
Middle to top swimmer
Temp
22–28 °C
Intermediate

Elizabeth’s Apistogramma

Apistogramma elizabethae

Adult size
up to 5 cm
Aquarium size
120 L or larger
Temperament
Semi-Aggressive
Zone
Bottom to middle swimmer
Temp
22–29 °C
Beginner – Intermediate

Ember Tetra

Hyphessobrycon amandae

Adult size
up to 2 cm
Aquarium size
30 L or larger
Temperament
Peaceful
Zone
Bottom to middle swimmer
Temp
22–28 °C
Beginner – Intermediate

Emerald Betta

Betta smaragdina

Adult size
up to 7 cm
Aquarium size
120 L or larger
Temperament
Semi-Aggressive
Zone
Top swimmer
Temp
22–26 °C
Beginner – Intermediate

Emerald Brochis Corydoras

Corydoras splendens

Adult size
up to 9 cm
Aquarium size
100 L or larger
Temperament
Peaceful
Zone
Bottom dweller
Temp
20–27 °C
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