HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesLizard triplefin Lizard triplefin (Crocodilichthys gracilis) Scientific name: Crocodilichthys gracilis Allen & Robertson, 1991 The Lizard triplefin (Crocodilichthys gracilis) is a marine fish of the family Tripterygiidae. Native range: Eastern Central Pacific, Gulf of California. BiologyInhabits rocky shores and steep slopes. Feeds on tiny invertebrates and algae. Minimum depth from.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCrocodilichthys gracilisFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length6.4Depth range10–38 m (33–125 ft)EnvironmentMarine; demersal; depth range 10 - 38 mClimateTropicalDistributionEastern Central Pacific: Gulf of California.Conservation status (IUCN)Least Concern (LC)Threat 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