Northern Australia and the Indo-Pacific region.
Eggs laid on a firm surface and guarded by male until they hatch. The fry are very small and require saltwater plankton to survive.
Carnivore, prefers live or frozen foods.
Called the Crazy Fish because it often swims upside down or at some weird angle. Also called Crimson-tipped Gudgeon (adults develop red edged fins.) Being commonly found in the lower reaches of rivers and in estuaries, Crazy Fish benefit from additional salt in their tank (eg 5-10% seawater).