HomeFish encyclopediaRay-finned fishesPerch-like fishSandburrowersTommyfish Tommyfish (Limnichthys polyactis) Scientific name: Limnichthys polyactis Nelson, 1978 The Tommyfish (Limnichthys polyactis) is a marine fish of the family Creediidae. Native range: Southwest Pacific, endemic to New Zealand. BiologyBuries itself in areas of broken shell and gravel with only the head exposed. Darts away and dives into the sand when disturbed.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLimnichthys polyactisFamilyCreediidae (Sandburrowers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.2Depth range0–6 m (0–20 ft)EnvironmentMarine; demersal; depth range 0 - 6 mClimateTemperateDistributionSouthwest Pacific: endemic to New Zealand.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026