HomeFish encyclopediaRay-finned fishesPerch-like fishWormfishesSpotted worm goby Spotted worm goby (Cerdale ionthas) Scientific name: Cerdale ionthas Jordan & Gilbert, 1882 The Spotted worm goby (Cerdale ionthas) is a marine fish of the family Microdesmidae. Native range: Eastern Central Pacific, Costa Rica to Colombia. BiologyInhabits shallow rocky coasts, including tide pools. Feeds on zooplankton and tiny benthic crustaceans.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCerdale ionthasFamilyMicrodesmidae (Wormfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.5Depth range0–1 m (0–3 ft)EnvironmentMarine; demersal; depth range 0 - 1 m, usually 0 - 1 mClimateTropicalDistributionEastern Central Pacific: Costa Rica to Colombia.Conservation status (IUCN)Data deficient (DD)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