Asprocottus herzensteini 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 : 233-234

Asprocottus herzensteini Berg, 1906

( Fig. 5 )

Holotype: ZIN 13740, Lake Baikal , opposite Cape Boroelgay, station 25, August 2, 1902, collected by A.A. Korotneff.

Current status: Asprocottus herzensteini Berg, 1906 ( Taliev, 1955; Sideleva, 2003).

Counts: D1 8, D2 15, A 12, P 16, C 19, vert. 34 (abdominal 9, caudal 25), three-pairs of pleural ribs.

Diagnosis: body (except for head) is covered with bony prickles; four well-developed sharp spines on preoperculum; a small gap between first and second dorsal fins is present; lateral line consists of lines of free neuromasts sitting on coriaceous papillae.

Proportional measurements as percentages of standard length (83.3 mm): predorsal length 35.6, preanal length 52.3, maximum body depth 14.9, length of caudal peduncle 13.8, depth of caudal peduncle 4.4, length of first dorsal-fin base 12.6, length of second dorsal-fin base 32.2, length of anal-fin base 28.7, length of longest first dorsal-fin ray 12.6, length of longest second dorsal-fin ray 14.4, length of longest anal-fin ray 10.9, pectoral-fin length 19.5, pelvic-fin length 11.5, distance between first and second dorsal fins 4.0, head length 28.7, postorbital length 12.0, head depth 12.6, head width 20.7, eye horizontal diameter 6.9, interorbital width 4.6, snout length 10.0, upper jaw length 12.5, interbranchial width 3.6, length of gill slit 17.5.

Figures

FIGURE 5. Asprocottus herzensteini Berg, 1906 ZIN 13740, holotype, photo (A) and radiograph (B).