1. Body Musculature and Fixation Features of Deropristis hispida (Trematoda, Deropristidae)

   • M. V. Yastrebov
   • I. V. Yastrebova
   • D. I. Smirnova

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 20 September 2021 Pages: 481 - 489

   

2. Taxonomic Composition of Silica-Scaled Chrysophytes in a Tropical Mountain Reservoir

   • Hai Doan-Nhu
   • Tran Thi Tinh
   • Lam Nguyen-Ngoc

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 20 September 2021 Pages: 490 - 499

   

3. Heterotrophic Flagellates from Mires of the North Caucasus, Russia

   • K. I. Prokina
   • D. A. Philippov

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 20 September 2021 Pages: 500 - 516

   

4. Two New Species of the Order Monhysterida Filipjev, 1929 (Nematoda) from the Van Uc River Mouth in Vietnam

   • V. G. Gagarin
   • Nguyễn Đình Tú’

   BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS 20 September 2021 Pages: 517 - 527

   

5. Epibiotic Macroalgae on Scallops and Oysters in Shallow Waters of Southern Primorye

   • I. R. Levenets
   • E. B. Lebedev
   • A. Yu. Baranov

   PHYTOPLANKTON, PHYTOBENTHOS, PHYTOPERYPHYTON 20 September 2021 Pages: 528 - 535

   

6. Formation of Fouling Communities on Anthropogenic Surfaces in the Coastal Waters of the Black Sea

   • L. L. Smirnova
   • A. A. Koshkarov
   • O. S. Sizova

   ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 20 September 2021 Pages: 536 - 545

   

7. Zooplankton Distribution in the Middle Volga River Reservoirs in Areas Under the Influence of Tributaries

   • V. N. Podshivalina

   ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 20 September 2021 Pages: 546 - 554

   

8. Main Classes of Rheophilic Macroinvertebrates Communities and Their Regional Variability in Eurasia

   • M. V. Chertoprud

   ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 20 September 2021 Pages: 555 - 572

   

9. Structure of Macrozoobenthos in Floodplain Lakes under Conditions of Different Durations of Spring Flooding

   • A. A. Prokin
   • D. G. Seleznev

   ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 20 September 2021 Pages: 573 - 580

   

10. Environmental Factors Affecting Distribution of Caddisfly (Trichoptera) Larvae in Mountain Streams of Northeastern Turkey

    • Pınar Ekingen
    • Nilgün Kazancı

    ZOOPLANKTON, ZOOBENTHOS, ZOOPERIPHYTON 20 September 2021 Pages: 581 - 589

    

11. Comparative Analysis of the Feeding Spectrum of Bream Abramis brama L. (Cyprinidae, Pisces) in Different Areas of the Rybinsk Reservoir

    • G. Kh. Shcherbina

    ICHTHYOLOGY 20 September 2021 Pages: 590 - 596

    

12. Food Spectrum, Trophic and Length-Weight Characteristics of Nonindigenous Suckermouth Armored Catfishes Pterygoplichthys spp. (Loricariidae) in Vietnam

    • I. A. Stolbunov
    • V. A. Gusakov
    • Nguyen Thi Hai Thanh

    ICHTHYOLOGY Open access 20 September 2021 Pages: 597 - 605

    

13. Abnormalities of Muscle and Liver Tissues Structure in the Amur Sturgeon Acipenser schrenckii and Kaluga Huso dauricus (Acipenseridae)

    • V. N. Koshelev
    • G. I. Ruban

    ECOLOGICAL PHYSIOLOGY AND BIOCHEMISTRY OF HYDROBIONTS 20 September 2021 Pages: 606 - 615

    

14. First Data on the Fauna of Turbellaria in the Uglich Reservoir

    • E. M. Korgina

    BRIEF COMMUNICATIONS 20 September 2021 Pages: 616 - 619

    

15. Finding of Longtail Dwarf Goby Knipowitschia longecaudata (Actinopterygii: Gobiidae) in the Upstream Part of Unregulated Section of the Volga River

    • Yu. V. Kodukhova
    • D. P. Karabanov

    BRIEF COMMUNICATIONS 20 September 2021 Pages: 620 - 625