A New Species of Rhynchohyalus from the Southeastern Pacific Ocean with Notes on R. natalensis (Opisthoproctidae) A. M. ProkofievE. I. Kukuev OriginalPaper 12 September 2020 Pages: 513 - 519
Taxonomic Status of Three Nominal Species of Indo-Pacific Flatfishes (Bothidae) with Redescription of Japonolaeops gracilis New Combination E. P. VoroninaS. RaredonJ. Maclaine OriginalPaper 12 September 2020 Pages: 520 - 530
New Data on the Shortcrevice Eelpout Gymnelopsis brevifenestrata (Zoarcidae) from the Sea of Okhotsk N. V. ChernovaM. V. Nazarkin OriginalPaper 12 September 2020 Pages: 531 - 539
Morphological Variability of Stone Cockscomb Alectrias alectrolophus (Stichaeidae) from the Sea of Okhotsk and the Bering Sea E. A. Poezzhalova-ChegodaevaM. Yu. Murasheva OriginalPaper 12 September 2020 Pages: 540 - 547
New Data on the Morphology and Distribution of Two Rare Species of Deep-Sea Anglerfish from the Families Linophrynidae and Himantolophidae A. M. Prokofiev OriginalPaper 12 September 2020 Pages: 548 - 554
Craniological Divergence of Two Genetically Closely Related Caucasian Spined Loaches: Cobitis saniae and C. derzhavini (Cobitidae) E. D. Vasil’evaV. P. Vasil’ev OriginalPaper 12 September 2020 Pages: 555 - 561
Otolith and Scale morphology of Endemic fish Cyprinion macrostomum in Tigris–Euphrates Basin S. KontaşS. YedierD. Bostancı OriginalPaper 12 September 2020 Pages: 562 - 569
Otolith Shape Analysis and the Relationships between Otolith Dimensions–Total Length of European Bitterling, Rhodeus amarus (Cyprinidae) Sampled from Samsun Province, Turkey S. SaygınM. ÖzpiçakN. Polat OriginalPaper 12 September 2020 Pages: 570 - 577
Species Composition, Distribution and Ecological Features of Ichthyofauna in the Pymvashor Geothermal Valley (Bolshezemelskaya Tundra, Nenets Autonomous Okrug) A. P. NovoselovO. V. AksenovaM. V. Surso OriginalPaper 12 September 2020 Pages: 578 - 584
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. PanchenkoA. A. BalanovA. B. Savin OriginalPaper 12 September 2020 Pages: 585 - 592
Population Dynamics of the Bream Abramis brama in Lake Peipus M. B. DanilovE. A. KriksunovS. V. Chistov OriginalPaper 12 September 2020 Pages: 593 - 607
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 OriginalPaper 12 September 2020 Pages: 608 - 617
On the Origin of Two Species of Charrs (Salvelinus, Salmonidae) in Lake Elgygytgyn: Data on the ATPase6–NADH4L Region of Mitochondrial DNA A. G. OsinovA. A. Volkov OriginalPaper 12 September 2020 Pages: 618 - 625
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 OriginalPaper 12 September 2020 Pages: 626 - 642
Comparison of Experimental Methods for Evaluating the Motivational Component of Fish Rheoreaction (Proportions of Rheoreaction Types) D. S. PavlovV. Yu. ParshinaD. A. Prozorov OriginalPaper 12 September 2020 Pages: 643 - 652
Courtship Role Reversal in Sevenspine Goby, Gymnogobius heptacanthus (Gobiidae) A. I. Markevich OriginalPaper 12 September 2020 Pages: 653 - 659
Continuous Exposure to Light Suppresses the Testicular Activity in Mozambique Tilapia Oreochromis mossambicus (Cichlidae) P. KonkalC. B. Ganesh OriginalPaper 12 September 2020 Pages: 660 - 667
New Record and Range Expansion of Frigate Tuna Auxis thazard (Scombridae) in the Equatorial Mid-Atlantic Ocean N. P. A. BezerraF. V. AlbuquerqueF. H. V. Hazin SHORT COMMUNICATION 12 September 2020 Pages: 668 - 671
