Oneirodes carlsbergi

description

Description. Dorsal-fin rays 6; pectoral-fin rays 16; anal-fin rays 4 caudal-fin rays 9. Head length 41.1 % SL; head depth 44.6; head width 28.6; illicium 27.9; width of esca 3.9; upper jaw 35.5; lower jaw 38.0. Upper jaw teeth 62; lower jaw teeth 67; vomerine teeth 5 (3, 2); epibranchial teeth 3 (right side examined only). Body short, globular, profile rounded in lateral view. Mouth large, slightly oblique. Illicium relatively short, its pterygiophore very long. Sphenotic, quadrate and articular spines well developed. Escal appendage pattern B of Pietsch (1974: 34, fig. 60 B): simple anterior appendage, length 11.7 % SL, internally pigmented and black distally; broad compressed posterior appendage, length 3.9 % SL, anterior portion thicker than posterior, black distally; two pairs of lateral appendages, both bifurcated and with several secondary branches; pair of short medial appendages, each with several secondary branches; terminal papilla flat, not elevated; trace of anterolateral appendages on one side of escal base (possibly damaged prior to catch). Lateral and medial appendages slightly pigmented. Body uniformly black.

Records of deep-sea anglerfishes (Lophiiformes: Ceratioidei) from Indonesia, with descriptions of three new species

distribution

Distribution. Previously known from Atlantic and Pacific oceans. The Indonesian specimen represents the first record in the eastern Indian Ocean.

Records of deep-sea anglerfishes (Lophiiformes: Ceratioidei) from Indonesia, with descriptions of three new species

materials_examined

Material. HUMZ 194130 (1, 132.1), st. 63, 4 ° 43.4 ' S, 101 ° 17.9 ' E – 4 ° 44.5 ' S, 101 ° 18.6 ' E, off Sumatra, 930 – 940 m, 9 Jun. 2005.

Records of deep-sea anglerfishes (Lophiiformes: Ceratioidei) from Indonesia, with descriptions of three new species

diagnosis

Diagnosis. Oneirodes carlsbergi differs from its congeners, except O. luetkeni, by the presence of teeth on the epibranchial of the first gill arch (vs. teeth absent). It differs from O. luetkeni, reported only from the eastern Pacific, by the number of teeth on the epibranchial of the first gill arch (1 – 5 vs. 6 – 17), number of toothed pharyngobranchials (two pairs of tooth-bearing pharyngobranchials vs. a single pair of tooth-bearing pharyngobranchials), ratio of lengths of dorsal and ventral forks of opercle (0.51 – 0.61 vs. 0.60 – 0.71), and esca with a tapering and internally pigmented anterior appendage (vs. anterior appendage without internal pigment, anterolateral appendage represented by a broad membranous flap) (Pietsch, 1974, 2009; Orr, 1991; Prokofiev, 2014 a, b; Ho et al., 2016; Rajeeshkumar et al., 2017; Ho, Shao, 2019). Geographical distribution. Oneirodes carlsbergi seems to have a circumtropical distribution between approximately 18 ºN and 8 ºS (Pietsch, 2009; Ho et al., 2016; Ho, Shao, 2019). One specimen recorded far from this presumably circumtropical range was collected off the Irish Atlantic slope (Pietsch, 2009). Other records in the Atlantic Ocean range fr

Deep-sea anglerfishes (Lophiiformes: Ceratioidei) from off northeastern Brazil, with remarks on the ceratioids reported from the Brazilian Exclusive Economic Zone