HomeFish encyclopediaRay-finned fishesClingfishesClingfishes and singleslitsRocksucker Rocksucker (Chorisochismus dentex) Scientific name: Chorisochismus dentex Pallas, 1769 The Rocksucker (Chorisochismus dentex) is a marine fish of the family Gobiesocidae. Native range: Southeast Atlantic, Namibia, and from Port Nolloth to northern Natal in South Africa. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 7-9; Anal spines: 0; Anal soft rays: 6 - 7Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameChorisochismus dentexFamilyGobiesocidae (Clingfishes and singleslits)OrderGobiesociformes (Clingfishes)ClassActinopterygii (Ray-finned fishes)Maximum length30.0EnvironmentMarine; demersalClimateSubtropicalDistributionSoutheast Atlantic: Namibia, and from Port Nolloth to northern Natal in South Africa.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceVery Low, minimum population doubling time more than 14 years (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