HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsDeep-sea bristly scorpionfishesChanneled rockfish Channeled rockfish (Setarches guentheri) Scientific name: Setarches guentheri Johnson, 1862 The Channeled rockfish (Setarches guentheri) is a marine fish of the family Setarchidae. In the aquarium it needs water at 6–13°C (43–55°F). Channeled rockfish care at a glanceTemperature6–13°C (43–55°F) BiologyDorsal spines (total): 11 - 13; Dorsal soft rays (total): 9-11; Anal spines: 3; Anal soft rays: 4 - 6. Lateral line more or less a continuous trough covered by thin membranous scales, usually lost during capture. Second preopercular spine well developed, sub equal or longer than first and third. Pectoral rays 20-25, with a mode of 21 in Hawaii, 22 in the eastern Atlantic, and 23 in the western Atlantic. Interorbital width 7-9 % SL, narrower than in S. longimanus.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSetarches guentheriFamilySetarchidae (Deep-sea bristly scorpionfishes)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length25.0Depth range150–780 m (492–2559 ft)EnvironmentMarine; benthopelagic; depth range 150 - 780 mClimateDeep-waterDistributionEastern Atlantic: Morocco, Madeira and Cape Verde to South Africa. Western Atlantic: USA to Brazil. Indo-West Pacific: Tanzania to South Africa, then India and Sri Lanka to the Bay of Bengal, Andaman Sea, north to Japan, Fiji and Hawaii, south to the Philippines, Indonesia and western Australia. Eastern Pacific: Chile.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousUsesFisheries: minor commercialResilienceLow, minimum population doubling time 4.5 - 14 years (Assuming tmax>10) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026