Melanotaenia lacustris

The upper body often appears blue with a paler belly.

The upper body often appears blue with a paler belly. During courtship, the stripe on top of the head differs from the usual coloration.

Adult length

Up to 10 cm (standard length, without the tail fin)

Water temperature

20–25 °C

pH

7–8

Hardness

9–12 dGH

Natural habitat

Inhabits a highland lake and its outlet.