HomeFish encyclopediaRay-finned fishesPerch-like fishSand stargazersCocos stargazer Cocos stargazer (Gillellus chathamensis) Scientific name: Gillellus chathamensis Dawson, 1977 The Cocos stargazer (Gillellus chathamensis) is a marine fish of the family Dactyloscopidae. Native range: Eastern Central Pacific, Cocos Island, Costa Rica. BiologyFound on sandy bottoms. Feeds on small fishes and invertebrates.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGillellus chathamensisFamilyDactyloscopidae (Sand stargazers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length3.8Depth range5–12 m (16–39 ft)EnvironmentMarine; demersal; depth range 5 - 12 mClimateTropicalDistributionEastern Central Pacific: Cocos Island, Costa Rica.Conservation status (IUCN)Vulnerable (VU) (D2)Threat 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