Vaillantella maassi

A distinct orange-yellow line runs along the back of the slender blue-brown body.

The line runs from snout to tail base. The dorsal fin is exceptionally long and the tail is forked.

Adult length

Up to 12.5 cm (standard length, without the tail fin)

Water temperature

23–29 °C

pH

3.5–7.2

Hardness

1–12 dGH

Natural habitat

Usually found along shallow forest-stream margins among leaf litter, in peat-associated blackwater as well as clear or turbid streams.

Groups need sufficient floor space and shelters.