Cottus kaganowskii Berg, 1932

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 : 236-237

Cottus kaganowskii Berg, 1932

( Fig. 9 )

Holotype: ZIN 23140, Belaya River at Sofron factory, October 10, 1928, collected by A. G. Kaganowsky.

Paratypes: ZIN 23805, Anadyr River at Ust-Belaya village, June 28, 1929, collected by A. G. Kaganowsky, total 19 specimens ;

ZIN 23806, Anadyr River at Telegrafnaya spit, September 22, 1929, collected by A. G. Kaganowsky, total 16 specimens (7 specimens; 9 specimens (juv.);

ZIN 23807, Anadyr Liman at Kedrovaya Koshka, July 13, 1929, collected by A. G. Kaganowsky, two specimens (juv.) ;

ZIN 23808, Anadyr River at Ust-Belaya village, October 7, 1928, collected by A. G. Kaganowsky, one specimen ;

ZIN 23809, Anadyr River at Ust-Belaya village, June 25, 1929, collected by A. G. Kaganowsky, one specimen .

Current status: Cottus cognatus Richardson, 1836 ( Sideleva, 2002; Chereshnev, 2008).

Counts: D1 7, DI2 17, A 12, C 21, vert. 33 (abdominal 11, caudal 22), three-pairs of pleural ribs.

Diagnosis: by the absence or feeble development of vomerine teeth C. kaganowskii is well distinguished from other Palearctic species of the genus Cottus (Berg, 1932) .

Proportional measurements as percentages of standard length of holotype (63.0 mm): predorsal length 33.6, preanal length 54.6, maximum body depth 21.7, length of caudal peduncle 16.6, depth of caudal peduncle 8.1, length of first dorsal-fin base 14.3, length of second dorsal-fin base 39.2, length of anal-fin base 28.7, length of longest first dorsal-fin ray 7.3, length of longest second dorsal-fin ray 13.0, length of longest anal-fin ray 15.7, pectoral-fin length 27.9, pelvic-fin length 20.5, head length 29.8, postorbital length 15.5, head depth 19.8, head width 27.7, eye horizontal diameter 6.8, snout length 9.7, interorbital width 3.3, upper jaw length 13.3, interbranchial width 10.1, length of gill slit 16.6.

Figures

FIGURE 9. Cottus kaganowskii Berg, 1932 ZIN 23140, holotype, photo (A) and radiograph (B).