1. Two new species of families Priacanthidae and Reproprcidae (Perciformes) from the upper part of lower Oligocene of the Northern Caucasus

   • A. M. Prokofiev

   OriginalPaper 04 June 2013 Pages: 245 - 251

2. Ecophysiological patterns of distribution and behavior of freshwater fish in thermal gradients

   • V. K. Golovanov

   OriginalPaper 04 June 2013 Pages: 252 - 280

3. Biological characteristics of lower Amur grayling Thymallus tugarinae (Salmoniformes: Thymallidae): 3. reproductive biology

   • P. B. Mikheev
   • V. I. Ostrovskii
   • E. I. Barabanshchikov

   OriginalPaper 04 June 2013 Pages: 281 - 292

4. Morphological peculiarities of pronephros in Russian sturgeon, Acipenser gueldenstaedtii Brandt (order acipenseriformes, family acipenseridae)

   • L. S. Krayushkina
   • A. A. Gerasimov
   • A. A. Kirsanov

   OriginalPaper 04 June 2013 Pages: 293 - 300

5. Activity of digestive hydrolases in carp Cyprinus carpio with different mercury content in food

   • V. V. Kuz’mina
   • V. T. Komov
   • P. V. Rusanova

   OriginalPaper 04 June 2013 Pages: 301 - 309

6. The diet and trophic niche of orange perch, Lepidoperca aurantia (Serranidae: Anthiinae) on Chatham Rise, New Zealand

   • P. L. Horn
   • M. R. Dunn
   • J. Forman

   OriginalPaper 04 June 2013 Pages: 310 - 316