HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsWavy-lined grouper Wavy-lined grouper (Epinephelus undulosus) Scientific name: Epinephelus undulosus Quoy & Gaimard, 1824 The Wavy-lined grouper (Epinephelus undulosus) is a marine fish of the family Serranidae. BiologyLives on muddy open substrate, seeking refuge in holes in the mud or with solid structures, shipwrecks or debris. A flighty species (Ref; 48635). Also found on banks. Feeds on small fishes and crustaceans (stomatopods), shrimps, and pelagic tunicates (Thalia and Pyrosoma sp.).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEpinephelus undulosusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length75.0Common length45.0Depth range24–90 m (79–295 ft)EnvironmentMarine; reef-associated; depth range 24 - 90 mClimateTropicalDistributionIndo-West Pacific: Gulf of Oman to Kenya, including Laccadive Islands, India, Sri Lanka, and the Andaman Islands. Not reported in the Red Sea and Persian Gulf. Known also from Indonesia, Sarawak of Malaysia, New Guinea, Papua New Guinea, Solomon Islands, and the Philippines.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: minor commercialResilienceLow, minimum population doubling time 4.5 - 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