Turquoise Rainbowfish

Melanotaenia lacustris

Also known as: Lake Kutubu Rainbowfish

A shimmering blue-green rainbowfish that shifts color with the light.

Water

Freshwater

Temperature

72–82°F

pH

7–8

Hardness

8–20 dGH

Max size

4.5 in

Min tank

40 gal

Temperament

Peaceful

Social

Schooling (6+)

Swim level

Mid-top

Diet

Omnivore

Care level

Beginner

Lifespan

5-8 years

Breeding

Egg-scatterer

Suitability

Common

Origin

New Guinea (Lake Kutubu)

A peaceful, active schooler glowing turquoise that intensifies when males display. Keep six or more with open swimming space and slightly hard water. A serene, color-shifting community fish.