Contents

Journal of Ichthyology

Vol. 60, No. 4, 2020

A New Species of Rhynchohyalus from the Southeastern Pacific Ocean with Notes on R. natalensis (Opisthoproctidae)

A. M. Prokofiev and E. I. Kukuev p. 513  abstract

Taxonomic Status of Three Nominal Species of Indo-Pacific Flatfishes (Bothidae) with Redescription of Japonolaeops gracilis New Combination

E. P. Voronina, S. Raredon and J. Maclaine p. 520  abstract

New Data on the Shortcrevice Eelpout Gymnelopsis brevifenestrata (Zoarcidae) from the Sea of Okhotsk

N. V. Chernova and M. V. Nazarkin p. 531  abstract

Morphological Variability of Stone Cockscomb Alectrias alectrolophus (Stichaeidae) from the Sea of Okhotsk and the Bering Sea

E. A. Poezzhalova-Chegodaeva and M. Yu. Murasheva p. 540  abstract

New Data on the Morphology and Distribution of Two Rare Species of Deep-Sea Anglerfish from the Families Linophrynidae and Himantolophidae

A. M. Prokofiev p. 548  abstract

Craniological Divergence of Two Genetically Closely Related Caucasian Spined Loaches: Cobitis saniae and C. derzhavini (Cobitidae)

E. D. Vasil’eva and V. P. Vasil’ev p. 555  abstract

Otolith and Scale morphology of Endemic fish Cyprinion macrostomum in Tigris–Euphrates Basin

S. Kontaş, S. Yedier and D. Bostancı p. 562  abstract

Otolith Shape Analysis and the Relationships between Otolith Dimensions–Total Length of European Bitterling, Rhodeus amarus (Cyprinidae) Sampled from Samsun Province, Turkey

S. Saygın, M. Özpiçak, S. Yılmaz and N. Polat p. 570  abstract

Species Composition, Distribution and Ecological Features of Ichthyofauna in the Pymvashor Geothermal Valley (Bolshezemelskaya Tundra, Nenets Autonomous Okrug)

A. P. Novoselov, O. V. Aksenova, I. N. Bolotov, N. G. Skyutte, V. V. Anufriev and M. V. Surso p. 578  abstract

Distribution and Size and Sex Composition of the Mud Skate Bathyraja taranetzi in the Pacific Waters off the Northern Kuril Islands and Coasts of Southeastern Kamchatka in the Summer Period

V. V. Panchenko, A. A. Balanov and A. B. Savin p. 585  abstract

Population Dynamics of the Bream Abramis brama in Lake Peipus

M. B. Danilov, E. A. Kriksunov, A. E. Bobyrev, A. D. Sheremet’ev, M. M. Mel’nik, S. O. Severin, P. V. Vasilev and S. V. Chistov p. 593  abstract

Forming and Realization of Fecundity in the Black Sea Turbot Scophthalmus maeoticus (Scophthalmidae) at the South-Western Shelf of the Crimean Peninsula

V. E. Giragosov p. 608  abstract

On the Origin of Two Species of Charrs (Salvelinus, Salmonidae) in Lake Elgygytgyn: Data on the ATPase6–NADH4L Region of Mitochondrial DNA

A. G. Osinov and A. A. Volkov p. 618  abstract

Introgressive Hybridization in the Secondary Contact Area of the Atlantic Herring Clupea harengus and the Pacific Herring C. pallasii (Clupeidae): Ecological Basis, Geographical Structure, and Temporal Variability of the Hybridization Zone

A. V. Semenova p. 626  abstract

Comparison of Experimental Methods for Evaluating the Motivational Component of Fish Rheoreaction (Proportions of Rheoreaction Types)

D. S. Pavlov, V. Yu. Parshina, V. V. Kostin and D. A. Prozorov p. 643  abstract

Courtship Role Reversal in Sevenspine Goby, Gymnogobius heptacanthus (Gobiidae)

A. I. Markevich p. 653  abstract

Continuous Exposure to Light Suppresses the Testicular Activity in Mozambique Tilapia Oreochromis mossambicus (Cichlidae)

P. Konkal and C. B. Ganesh p. 660  abstract

Short Communication

New Record and Range Expansion of Frigate Tuna Auxis thazard (Scombridae) in the Equatorial Mid-Atlantic Ocean

N. P. A. Bezerra, F. V. Albuquerque, J. Figueiredo-Filho, B. C. L. Macena and F. H. V. Hazin p. 668  abstract