HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsSearobinsLumptail searobin Lumptail searobin (Prionotus stephanophrys) Scientific name: Prionotus stephanophrys Lockington, 1881 The Lumptail searobin (Prionotus stephanophrys) is a brackish-water fish of the family Triglidae. Native range: Eastern Pacific, Columbia River in Washington, USA to Chile, but rare north of Baja California, Mexico. Species factsScientific namePrionotus stephanophrysFamilyTriglidae (Searobins)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length43.0Common length30.0Depth range15–110 m (49–361 ft)EnvironmentMarine; brackish; demersal; depth range 15 - 110 m, usually 18 - 46 mClimateSubtropicalDistributionEastern Pacific: Columbia River in Washington, USA to Chile, but rare north of Baja California, Mexico.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: commercial; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (K=0.17-0.22; tm=3-4) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026