Hades’ snake moray (Uropterygius hades) is a ray-finned fish of the family Muraenidae. It inhabits diadromous, migrating between freshwater and the sea waters. This species can reach a maximum total length of 34.9 cm. It occurs at depths between 2 and 10 metres. With a trophic level of 3.5, it is a low-level carnivore, feeding on invertebrates and small organisms.
Vertebrae: 117 - 122. This small, slender moray eel, possible maximum TL < 35.0 cm, female mature at 17.1 mm TL is distinguished by the following characters: anus at mid-length of body; eyes small and anteriorly placed; snout pointed; upper jaw slightly longer than lower jaw; teeth sharply pointed with smooth edges and recurved tips; intermaxillary teeth in 5 rows; maxillary and dentary teeth biserial, the inner rows extending to about posterior end of jaws; vomerine teeth in single row; branchial pore absent; total vertebrae 117-122. Colouration: body uniformly dark brown; head pores, oral cavity, and inner skin of posterior nostril and gill opening whitish; iris reddish-brown .Cross section: oval.
Behavioural data for Hades’ snake moray is currently being reviewed.
Marine; freshwater; brackish; benthopelagic; depth range 2 - 10 m . Tropical Pacific Ocean: Japan (Ryukyu Arch.
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