Heterophotus Regan & Trewavas, 1929

Villarins, Bárbara T., Dario, Fabio Di, Eduardo, Leandro N., Lucena-Frédou, Flávia, Bertrand, Arnaud, Prokofiev, Artem M. & Mincarone, Michael M., 2022, Deep-sea dragonfishes (Teleostei: Stomiiformes) collected from off northeastern Brazil, with a review of the species reported from the Brazilian Exclusive Economic Zone, Neotropical Ichthyology (e 220004) 20 (2), pp. 1-78 : 35

Heterophotus Regan & Trewavas, 1929

Diagnosis. Heterophotus is a monotypic genus that can be distinguished in the Astronesthinae by the postorbital organ as long as the eye; ventral photophores in irregular groups of 1–5; IP 1–11; PV 32–35; VAV 13–14; OV 33–36; VAL 16–20; AC 13–15; 31–35 closely spaced and erect (not slanting) maxillary teeth; gill arch teeth in groups of 2; ceratohyal teeth absent; 14–20 palatine teeth; 12–17 anal-fin rays; 11–13 dorsal-fin rays; ventral adipose fin absent; chin barbel with flattened white tip without terminal filaments; tip of snout not upturned (Gibbs, 1964; Sutton et al., 2020).