soft rays: 8;
Vertebrae: 21 - 22. A frogfish of the lophiiform family Antennariidae, genus Histiophryne, unique in having a relatively long illicium and esca, the latter expanded distally, its shape more or less rectangular with rounded edges, and genetic divergence in the nuclear recombination activation gene-2 (RAG2) and cytochrome oxidase-I (COI) genes (Ref. 87287).
Body short and deep, somewhat compressed laterally, vertebral column distinctly sigmoid in shape; head large, its length approximately 29−39% standard length (SL); mouth small(relative to other antennariid taxa), opening strongly oblique to nearly vertical. Jaws bearing 2?4 irregular rows of small villiform teeth; similar teeth present on vomer and palatine. Eye diameter 4.5?4.9% and 8.8?9.1% SL for adults (four specimens) and juveniles (two specimens), respectively. Spinous dorsal fin consisting of three widely spaced spines, anteriormost spine (illicium) relatively long