HomeFish encyclopediaRay-finned fishesSilversidesSilversidesPrince Regent hardyhead Prince Regent hardyhead (Craterocephalus lentiginosus) Scientific name: Craterocephalus lentiginosus Ivantsoff, Crowley & Allen, 1987 The Prince Regent hardyhead (Craterocephalus lentiginosus) is a freshwater fish of the family Atherinidae. Native range: Oceania, known only from the Upper Roe River and Wyulda Creek (a tributary), both within the Prince Regent Reserve, northwest Kimberley area, Western Australia. BiologyInhabits clear flowing streams over rocky bottoms. Occurs in still or flowing streams over sandy, muddy or rocky bottoms. Collections have also been made from small isolated brackish pools on the tidal flats, in turbid water. A solitary specimen of a similar species, which may prove to be new to science, was recently collected near Rum Jungle (Northern Territory).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCraterocephalus lentiginosusFamilyAtherinidae (Silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length8.0Common length5.5EnvironmentFreshwater; benthopelagicClimateTropicalDistributionOceania: known only from the Upper Roe River and Wyulda Creek (a tributary), both within the Prince Regent Reserve, northwest Kimberley area, Western Australia.Conservation status (IUCN)Lower Risk: near threatened (LR/nt)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026