HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesMonster shrimpgoby Monster shrimpgoby (Tomiyamichthys oni) Scientific name: Tomiyamichthys oni Tomiyama, 1936 The Monster shrimpgoby (Tomiyamichthys oni) is a marine fish of the family Gobiidae. Native range: Northwest Pacific, southern Japan. BiologyDorsal spines (total): 6 - 7; Dorsal soft rays (total): 11; Anal spines: 1; Anal soft rays: 11Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTomiyamichthys oniFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length11.0Depth range6–25 m (20–82 ft)EnvironmentMarine; reef-associated; depth range 6 - 25 mClimateSubtropicalDistributionNorthwest Pacific: southern Japan.Conservation status (IUCN)Not EvaluatedThreat 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