1. On the Gadus taxonomy: Ontogenetic evidence

   • S. A. Evseenko
   • B. Laurel
   • D. Yu. Malikova

   OriginalPaper Pages: 351 - 358

2. Long-term variation in dates of mass spawning of cod Gadus morhua callarias (Gadidae) in the southeastern part of the Baltic Sea

   • E. M. Karasiova

   OriginalPaper Pages: 359 - 368

3. New data on the trout Salvelinus leucomaenis and its relationships with Dolly Varden trout S. malma curilis in fresh waters of the southern Kuril Islands

   • M. Yu. Pichugin
   • L. K. Sidorov
   • O. F. Gritsenko

   OriginalPaper Pages: 369 - 382

4. The impact of fishery on the state of populations of the European whitefish Coregonus lavaretus in Lake Imandra

   • A. A. Lukin
   • Yu. N. Sharova
   • B. F. Prishchepa

   OriginalPaper Pages: 383 - 390

5. A method for the assessment of sperm quality in fish

   • D. A. Pavlov

   OriginalPaper Pages: 391 - 398

6. Parameters of the blood and immune system of Rutilus rutilus lacustris (Cypriniformes: Cyprinidae) during an invasion with pleurocercoids of Ligula intestinalis (Pseudophyllidae: Ligulidae)

   • O. E. Mazur
   • N. M. Pronin

   OriginalPaper Pages: 399 - 403

7. On the impact of low concentrations of chlorophos in the period of early ontogenesis on digestive carbohydrases of underyearlings of roach Rutilus rutilus

   • I. L. Golovanova
   • M. G. Talikina

   OriginalPaper Pages: 404 - 408

8. On the species composition and the distribution of Ceratiid anglers (Ceratiidae) in Russian and adjacent waters

   • V. E. Kharin

   Short Communications Pages: 409 - 412