Eustomias schmidti Regan & Trewavas, 1930
publication ID |
https://doi.org/ 10.1590/1982-0224-2022-0004 |
DOI |
https://doi.org/10.5281/zenodo.12720289 |
persistent identifier |
https://treatment.plazi.org/id/EC2487AA-EA3B-C530-65D8-FE7BFB9653CF |
treatment provided by |
Felipe |
scientific name |
Eustomias schmidti Regan & Trewavas, 1930 |
status |
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Eustomias schmidti Regan & Trewavas, 1930 View in CoL
( Fig. 15F View FIGURE 15 )
Diagnosis. Eustomias schmidti differs from congeners by the presence of two pectoral-fin rays bound together in black tissue; chin barbel short, about 7–17% of SL; a distinct chin barbel anatomy, with three branches arising from the stem: the medial branch is stout, bulbous and with distal filaments, barely reaching to barbel tip, the lateral branches taper distally, extending well beyond end of barbel; terminal bulb of chin barbel unpigmented and long, occupying most of distal barbel, tightly constricted distally into a spheroidal terminal section, and with a terminal filament or single-based group of filaments arising ventrally from this constriction; deep ventral groove on belly relatively short, extending to PV 4–6; anal-fin base approximately twice as long as dorsal-fin base; postorbital photophore and barbel photophore probably glows green or blue (Morrow, Gibbs, 1964; Gibbs, 1986c; McEachran, Fechhelm, 1998; Clarke, 2000; Kenaley, Stewart, 2015h; Sutton et al., 2020).
Geographical distribution. Atlantic and Pacific oceans, between 40ºN and 40ºS (Morrow, Gibbs, 1964; Parin, Pokhilskaya, 1974; Bekker et al., 1975; Gibbs, 1986c; Gibbs, Barnett, 1990; Vinnichenko, 1997; Aizawa, 2002; Harold, 2003; Moore et al., 2003; Mundy, 2005; Kenaley, Stewart, 2015h; Carneiro et al., 2019; Sutton et al., 2020). In the western Atlantic the species is reported from off the United States to the Caribbean Sea, with a single record off southeastern Brazil, outside the country’s EEZ (Clarke, 2000; Menezes et al., 2003; Judkins, Haedrich, 2018). Melo et al. (2020) also included E. schmidti in a list of deep-sea fishes of Brazil, without providing information on voucher specimens or locality data. Therefore, the occurrence of E. schmidti is confirmed in Brazilian waters based on one specimen collected off the Fernando de Noronha Archipelago, at 850 m depth ( Fig. 14C View FIGURE 14 ).
Specimen examined. 1: NPM 4882, 1 (68 mm), AB2#42A.
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