Melanotaenia pygmaea

Males are metallic blue with a reddish-brown head and whitish fins.

Males are metallic blue with a reddish-brown head and whitish fins. Females have smaller fins and lack the reddish-brown head coloration.

Adult length

About 4 cm (standard length, without the tail fin)

Natural habitat

Inhabits clear, fast streams, often deeper pools below waterfalls over solid rock with little vegetation.