Kurtus gulliveri, the nurseryfish, is a species of fish in the family Kurtidae native to fresh and brackish waters in southern New Guinea and northern Australia. They can be found in estuaries, mangrove swamps, nipa swamps and slow-flowing rivers with high turbidity. This species can reach a length of 63 cm (25 in), although most are far smaller: In a study of its morphology, 159 specimens were examined and the largest was 33 cm (13 in), while the average was 14 cm (5.5 in). This species is famous for its unusual breeding strategy where the male carries the egg cluster on a hook protruding from the forehead (supraoccipital). Females do not have a hook. It feeds on crustaceans (especially prawn and shrimp), small fish and insect larvae. This species is well regarded as food. The specific name honours a Mr Gulliver who collected the type, thought most likely to refer to Thomas Allen Gulliver (1847-1931) who worked on Australias a post and telegraph services and who lived near the Norman River, Gulf of Carpentaria where he collected natural history specimens and where the type of this species was collected.
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