Steven's swellshark (Cephaloscyllium stevensi) is a ray-finned fish of the family Scyliorhinidae. It inhabits marine (saltwater) waters in pelagic environments. This species can reach a maximum total length of 66 cm. It occurs at depths between 240 and 274 metres. With a trophic level of 4.1, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.
Similar to its congeners, this species is most easily distinguished by its color pattern: gray-brown above, whitish ventrally, mottled with brown and whitish spots of variable size over head and body, including ventrally; 6 large dark brown saddle blotches dorsally on head and body and 3 on caudal fin; first four dorsal dark blotches connecting or leading obliquely to other dark blotches below; small white spots most distinct within or at edges of dark brown blotches .: elongated.
Behavioural data for Steven's swellshark is currently being reviewed.
Marine; pelagic-neritic; depth range 240 - 274 m . Tropical
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