Abyssocottus gibbosus Berg, 1906

Sideleva, Valentina G. & Zhidkov, Zakhar V., 2021, An annotated type catalogue of freshwater sculpins (Cottoidei) described by Lev Berg, Zootaxa 5016 (2), pp. 229-242 : 231-232

Abyssocottus gibbosus Berg, 1906

( Fig. 3 )

Holotype: ZIN 13737, Lake Baikal , village Goremyki [Baikalskoe], depth 625 m, station 25, 28 July 1902, collector A.A. Korotneff.

Current status: Abyssocottus gibbosus Berg, 1906 ( Sideleva, 1982; 2003).

Counts: D1 7, D2 15, A 13, P 16, C 23, vert. 32 (abdominal 10, caudal 22), one-pair of pleural ribs.

Diagnosis: massive head, its length is about 40% of SL; small eye located in deep eye socket; first and second dorsal fins close together; the color of the body and fins is light, almost white.

Proportional measurements as percentages of standard length (95.0 mm): predorsal length 43.8, preanal length 57.1, maximum body depth 25.5, length of caudal peduncle 14.3, depth of caudal peduncle 6.1, length of first dorsal-fin base 15.3, length of second dorsal-fin base 34.7, length of anal-fin base 28.1, length of longest first dorsal-fin ray 10.2, length of longest second dorsal-fin ray 15.3, length of longest anal-fin ray 13.3, pectoral-fin length 23.5, pelvic-fin length 18.9, head length 39.8, postorbital length 21.4, head depth 21.4, head width 28.6, eye horizontal diameter 5.1, interorbital width 6.1, upper jaw length 19.5, snout length 16.1, interbranchial width 1.7, length of gill slit 23.3.

Figures

FIGURE 3. Abyssocottus gibbosus Berg, 1906 ZIN 13737, holotype, photo (A) and radiograph (B).