HomeFish encyclopediaRay-finned fishesPerch-like fishGobiesHelen reef pygmy goby Helen reef pygmy goby (Trimma hotsarihiensis) Scientific name: Trimma hotsarihiensis Winterbottom, 2009 The Helen reef pygmy goby (Trimma hotsarihiensis) is a marine fish of the family Gobiidae. Native range: Western Pacific, Palau. BiologyCollected from a vertical wall covered with sponges, small hard corals, ascidians, huge sandy-floored cave (ca 20 m wide and 5 m high, floor at 27 m) with sea-fans and hydroids at entrance, with sand/rock/patch reef below cave, at 22-34 m depth.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameTrimma hotsarihiensisFamilyGobiidae (Gobies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length1.6Depth range22–34 m (72–112 ft)EnvironmentMarine; pelagic-neritic; depth range 22 - 34 mClimateTropicalDistributionWestern Pacific: Palau.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