Y-bar moray (Gymnothorax ypsilon), first described by Hatooka & Randall, 1992 is a large fish in the family Muraenidae (order Anguilliformes). Adults typically reach 89.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 110 to 185 metres. It occurs in Subtropical waters. Diet is predominantly piscivorous, targeting other fish and larger prey. On the IUCN Red List, it is classified as Least Concern.
Anal spines: 0; Anal soft rays: 151 - 154; Vertebrae: 141 - 153. A species of Gymnothorax of moderate length. Dorsal fin moderately high, its origin before gill opening. Anus before mid-body. Jaw teeth sharp and uniserial. Body creamy light brown with 26-35 distinct, narrow, dark crossbars extending onto fins (some bars on most specimens Y-shaped). Anterior part of head uniformly light brown. Anal fin with a white margin . MVF 5-56-149 .: eel-like.
Behavioural data for Y-bar moray is currently being reviewed.
Marine; demersal; depth range 110 - 185 m . Subtropical Pacific Ocean: southern Japan and the Hawaiian Islands.
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