Hoplostethus tenebricus is a small deep-sea fish species belonging to the slimehead family (Trachichthyidae).

It is found in the Western Indian Ocean (known only from Delagoa Bay, Mozambique).

[2] The habitat of Hoplostethus tenebricus can be found in a marine environment within a deep-water range.

[2] The average length of Hoplostethus tenebricus is about 21 cm (8.3 in).

This Beryciformes-related article is a stub.