1. Thermal preference: when does an asset become a liability?

   • Charles C. Coutant

   Invited review Pages: 161 - 172

2. Morphological characteristics of an introduced threespine stickleback, Gasterosteus aculeatus, from Hasse Lake, Alberta: a first occurrence in the interior plains of North America

   • Joseph S. Nelson
   • Margaret A. Harris

   Full paper Pages: 173 - 181

3. Patterns of space use common to widely different types of social groupings of a coral reef fish

   • Douglas Y. Shapiro

   Full paper Pages: 183 - 194

4. Niche relations within an Ozark stream cyprinid assemblage

   • David L. McNeely

   Full paper Pages: 195 - 208

5. Growth and habitat separation in eight cohorts of three species of cyprinids in a subalpine lake

   • Veronika Rheinberger
   • Rudolf Hofer
   • Wolfgang Wieser

   Full paper Pages: 209 - 217

6. Reproductive biology of stream-spawning roach, Rutilus rutilus

   • Leif Asbjørn Vøllestad
   • Jan Henning L'Abée-Lund

   Full paper Pages: 219 - 227

7. Interactions between a phytoplanktivorous fish, Oreochromis aureus, and two unialgal forage populations

   • Michael E. McDonald

   Brief communication Pages: 229 - 234

8. Male courting behaviour in the fathead minnow, Pimephales promelas

   • Kathleen S. Cole
   • R. Jan F. Smith

   Brief communication Pages: 235 - 239