Pachystomias Günther, 1887

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 : 43

publication ID

https://doi.org/ 10.1590/1982-0224-2022-0004

DOI

https://doi.org/10.5281/zenodo.12720263

persistent identifier

https://treatment.plazi.org/id/EC2487AA-EA22-C529-643B-FBDBFB685036

treatment provided by

Felipe

scientific name

Pachystomias Günther, 1887
status

 

Pachystomias Günther, 1887 View in CoL

Diagnosis. Pachystomias can be distinguished in the Malacosteinae by the very large and crescent-shaped suborbital organ, red or orange in fresh specimens; body depth about 13.8-20.0% SL; two nostrils on either side of head; a small postorbital organ below eye; mouth floor, i.e., the membrane between the mandibular symphysis and the hyoid, present; chin barbel without terminal bulb, its length shorter than head length in adults but about equal to 50% SL in juveniles; teeth uniserial in jaws, curved; 5–6 pectoral-fin rays, reduced in length; dorsal- and anal-fin bases approximately equal in length, anal-fin origin just posterior to dorsal-fin origin; photophores in both ventral and lateral series with long spaces separating them into clearly distinct groups (Morrow, Gibbs, 1964; Gibbs, 1986c; McEachran, Fechhelm, 1998; Kenaley, Stewart, 2015g; Sutton et al., 2020). A single valid species (Fricke et al., 2022).

Kingdom

Animalia

Phylum

Chordata

Order

Stomiiformes

Family

Stomiidae

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