David L. G. Noakes and Jack A. Ward (Editors): Ecology and ethology of fishes. Proceedings of the 2nd biennial symposium on the ethology and behavioral ecology of fishes, Normal, Ill., U.S.A., October 1979.—Developments in environmental biology of fishes 1 (ed. E. K. Balon).—With 46 figs., 32 tabl., 144 pp. The Hague — Boston — London: Dr. W. Junk, Publ. 1981. ISBN 90-6193-896-1. Dfl. 65.—, US $ 34.00