12004 Optivus elongatus (Günther, 1859) Trachichthyidae Slimeheads Trachichthyiformes Teleostei Slender roughy Southwestern Pacific: Restricted to New Zealand. AMNH 96017 Optivus elongatus GCRL 26630 1981 Hoplostethus elongatus 100 - 400 m GCRL 23572 1989 Hoplostethus elongatus 2 m AMNH 96038 1990 Optivus elongatus AMNH 96039 1990 Optivus elongatus AMNH 96095 1990 Optivus elongatus AMNH 96096 1990 Optivus elongatus AMNH 96097 1990 Optivus elongatus AMNH 96098 1990 Optivus elongatus AMNH 96099 1990 Optivus elongatus