Contents

Journal of Ichthyology

Vol. 65, No. 7, 2025

STATE-OF-THE-ART OF FRESHWATER FISH BIOLOGY IN RUSSIAN AND ADJACENT WATERS

Preface

B. A. Levin, Yu. V. Gerasimov, and D. S. Pavlov p. 1145  abstract

Populations of the European Smelt Osmerus eperlanus (Osmeridae) in Small Lakes of the Vologda Oblast, Russia

M. Ya. Borisov, A. A. Ignashev, E. V. Lobunicheva, and S. A. Neporotovsky p. 1148  abstract

Parasites of Fish Juveniles in a Small River: The Cost of Fish Omnivory

V. N. Mikheev and A. E. Zhokhov p. 1161  abstract

Phylogeography and Genetic Diversity of the Common Roach Rutilus rutilus (Leuciscidae) in Water Bodies of Belarus

E. S. Gajduchenko, A. V. Sosna, A. I. Tchaikovsky, Yu. I. Okhremenko, and B.A. Levin p. 1169  abstract

Phylogeography and Genetic Diversity of the Monkey Goby Neogobius fluviatilis (Gobiidae) in the Central European Invasion Corridor

E. S. Gajduchenko, V. I. Golovenchik, Yu. I. Okhremenko, and D. A. Medvedev p. 1181  abstract

Free Cartilages of the Zebrafish Danio rerio (Danionidae) Caudal Fin Endoskeleton

D. V. Kapitanova and F. N. Shkil p. 1192  abstract

Adaptations of Kidlin Cod Gadus morhua kildinensis (Gadidae) to Specific Habitat Conditions

A. N. Stroganov, N. N. Lugovoi, E. A. Shubina, M. V. Ponomareva, and E. V. Ponomareva p. 1202  abstract

Factors of Variability in Downstream Migration of Juvenile Fish in Regulated Rivers

D. S. Pavlov, V. N. Mikheev, and V. V. Kostin p. 1207  abstract

Shelter Selection by European River Lamprey Lampetra fluviatilis (Petromyzontidae) Smolts during their Seaward Migration

A. O. Zvezdin, A. V. Kolotei, and V. V. Kostin p. 1218  abstract

Differentiation of Individuals of Artificial and Natural Origin in Sturgeons by Fin Ray Microchemisty: A Case Study on Sterlet Acipenser ruthenus (Acipenseridae) of the Kama River Basin

I. N. Merzlyakov, S. N. Kazarinov, L. V. Merzlyakova, A. Yu. Puzik, A. V. Tokarev, M. A. Baklanov, and P. B. Mikheev p. 1225  abstract

Genetic Differentiation of Ship Sturgeon Acipenser nudiventris (Acipenseridae) Specimens from Natural Populations and Farmed Broodstocks

V. D. Shcherbakova, A. E. Barmintseva, D. P. Savchenko, A. S. Safronov, and N. S. Mugue p. 1236  abstract

The Sterlet Acipenser ruthenus (Acipenseridae) in the Nizhnekamsk Reservoir: Structure of Catches, Biological Parameters and Prospects for Stock Use

Yu. A. Severov, A. V. Granin, and M. A. Gorshkov p. 1251  abstract

Microplastics in Surface Waters of the Russian Arctic Seas: Distribution, Concentration, Identification, and Eco-Risks for Fish

A. P. Pedchenko, Ya. Yu. Blinovskaya, and V. A. Belyaev p. 1259  abstract