HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsRivulated mutton hamlet Rivulated mutton hamlet (Alphestes multiguttatus) Scientific name: Alphestes multiguttatus G?nther, 1867 The Rivulated mutton hamlet (Alphestes multiguttatus) is a marine fish of the family Serranidae. Native range: Eastern Pacific, Gulf of California to Peru. BiologyA shallow-water species, cryptically colored and secretive. Sedentary during the day, hiding in crevices or lying among seaweed, and rely on their effective camouflage to escape detection (sometimes lying and partly covering itself with sand). Nocturnal predators feeding mainly on benthic crustaceans.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAlphestes multiguttatusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length30.0Common length18.0EnvironmentMarine; demersal; non-migratoryClimateTropicalDistributionEastern Pacific: Gulf of California to Peru.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: of no interestResilienceHigh, minimum population doubling time less than 15 months (Assuming Fec > 10,000) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026