1. Publisher's announcement

   • Alison J. Bradshaw

   Publishers Note Pages: 275 - 275

2. Editorial and introduction: The species concept in fish biology

   • Joseph S. Nelson

   Editorial Introduction Pages: 277 - 280

3. What is a fish species?

   • George F. Turner

   OriginalPaper Pages: 281 - 297

4. Species pairs of north temperate freshwater fishes: Evolution, taxonomy, and conservation

   • Eric B. Taylor

   OriginalPaper Pages: 299 - 324

5. Fish species – how and why

   • Sven O. Kullander

   OriginalPaper Pages: 325 - 352

6. Species concepts and phylogenetics

   • Mário C.C. de Pinna

   OriginalPaper Pages: 353 - 373

7. The good, the bad, and the ugly: A critical look at species and their institutions from a user's perspective

   • Rainer Froese

   BriefCommunication Pages: 375 - 378

8. Molecular markers and the species concept: New techniques to resolve old disputes?

   • Gary R. Carvalho
   • Lorenz Hauser

   BriefCommunication Pages: 379 - 382

9. Volume Contents

   Volume Contents Pages: 383 - 385

10. Author index to Volume 9

    Authors Index Pages: 386 - 386