Prince Regent hardyhead
 The Prince Regent hardyhead Craterocephalus lentiginosus is a species of fish in the Atherinidae family endemic to the a region in the northwest of Australia. It is also called the freckled hardyhead.This fish was first described in 1987. It has been found in variety of habitats brackish pools or flowing to turgid waters in the Upper Roe River and one of its tributaries.