Section outline


    • Pictures from the Market Fish and Shellfish Catalogue website

    • The dorsal fin of sea bream has spiny rays. The role of these spines is thought to be to protect them from enemies.

      Why, then, do sea breams have spiny rays but salmon do not?

      Let us consider the differences in life history and habitat.

      We will also examine the development of spiny rays in other fish species and consider the similarities and differences between them.