All images Copyright 1999-2003 by Robert Delfs.
The cockatoo waspfish disguises itself as a dead leaf - and does a very good job of it. It can be found swaying from side to side in a convincingly leaf-like manner among real dead leaves in small hollows on sandy bottoms.
The only sure way to find a cockatoo is to look closely at dead leaves underwater. When you find a leaf with eyes and a long dorsal fin, that's a cockatoo.