A fish encased in armor: fused bony plates around a flattened body, a long spade of a snout, and wide pectoral fins held out like wings. Ten centimeters (4 in) at most, and almost always found as a pair walking slowly over open sand.
Walking is literal. The pelvic fins are stiffened into a pair of struts, and the animal moves by placing them one after another rather than by swimming, which for a fish in the open on bare sediment is a way of not attracting attention. It can swim when pushed and looks wrong doing it.
The armor creates a problem the family solved oddly: a rigid plated shell cannot grow. So a dragonfish sheds the entire outer layer in one piece every few days, like an insect, and comes out slightly larger - a moult, in a vertebrate, which almost nothing else does.
Feeding is done by suction through that long snout, which the fish pushes into sand to pull out tiny crustaceans and worms. Pairs stay together for long periods, which is unusual enough in small reef fish to be worth watching for.
The genus. Eurypegasus Bleeker 1863 - eury (wide). ETYFish
The species. Eurypegasus draconis (Linnaeus 1766) - of a draco. ETYFish
- flat armored body encased in bony plates, with a long flattened snout
- wide wing-like pectoral fins held out to the sides
- walks on stiff pelvic fins instead of swimming, usually in a pair
- length up to 10 cm
Why it's threatened
Threat classification from the IUCN Red List.















