Eustomias enbarbatus Welsh, 1923

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 : 51

Eustomias enbarbatus Welsh, 1923

( Fig. 15D )

Diagnosis. Eustomias enbarbatus differs from congeners by the presence of 3–4 (usually 3) well developed pectoral-fin rays; chin barbel 27.5–34.9% SL, with one terminal bulb; one filament before the terminal bulb, which ends in a branched stem or in a group of short filaments; deep groove on belly absent (Morrow, Gibbs, 1964; McEachran, Fechhelm, 1998; Sutton et al., 2020).

Geographical distribution. Atlantic, Indian, and Pacific oceans (Morrow, Gibbs, 1964; Parin, Pokhilskaya, 1974; Gibbs, Barnett, 1990; Aizawa, 2002; Harold, 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 Uruguay, including the Gulf of Mexico and the Caribbean Sea (Parin et al., 1974; Morrow, Gibbs, 1964; McEachran, Fechhelm, 1998; Harold, 2003; Moore et al., 2003; Nión et al., 2016). The species was recorded in Brazilian waters off Saint Peter and Saint Paul and Trindade and Martin Vaz archipelagos (Judkins, Haedrich, 2018; Sutton et al., 2020). Eustomias enbarbatus is reported here based on specimens collected between depths of 680 and 780 m off the Pernambuco State and the Fernando de Noronha Archipelago ( Fig. 14C ).

Specimens examined. 3 (54–60 mm SL): NPM 4818, 1 (54 mm), AB2#16; NPM 4819, 2

(55–60 mm), AB2#42A.

Figures

FIGURE 14 | Records of species of the Melanostomiinae (A–F) collected during the ABRACOS expeditions off northeastern Brazil. Oceanic islands: RA, Rocas Atoll; FN, Fernando de Noronha Archipelago.

FIGURE 15 | A. Eustomias bibulbosus, NPM 4642, 87 mm SL; B. Eustomias braueri, NPM 4816, 56 mm SL; C. Eustomias brevibarbatus, NPM 4646, 95 mm SL; D. Eustomias enbarbatus, NPM 4819, 60 mm SL; E. Eustomias minimus, NPM 4881, 69 mm SL; F. Eustomias schmidti, NPM 4882, 68 mm SL. Scale bars = 10 mm.