The smallscale slimehead (Hoplostethus melanopus) is a deepwater fish of the family Trachichthyidae. It lives on the continental shelf at a depths of 400–914 m (1,312–2,999 ft). It can reach sizes of up to 25.0 cm (9.8 in) TL. It is a brownish-grey color with blackish fins. It is found in the Indian and Pacific Oceans along the coasts of South Africa, Somalia, the United Arab Emirates, Madagascar, Japan, Indonesia, and Namibia.

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