Introduction
The hatchetfish's contour is very deep and keel-like. The silver body is marked by a thin dark line on the rear two-thirds of the flanks. Pectoral fins are large and winglike, contrasting with their rudimentary pelvic fins. They have large eyes that are well set forward on a small head, and the mouth is upturned.

Tank Setup
Preferably a longer tank, for more swimming room. As these fish have bodies and fins made for jumping out of the water, a tight-fitting hood is a must. Also, plenty of plants should be provided to allow the fish hiding spots.

Community Tips
This fish should be kept in shoals of five or more, and with various floating plants to make them feel safer.

Feeding Tips
These fish are carnivores. However they will take a variety of food including flake, bloodworms, small flies, tubifex worms, and mosquito larvae.

Sexual Identification & Breeding
Males are usually slimmer, and smaller than females. It is thought that a lower pH and plenty of floating plants encourage these fish to breed.