2 literature references:

Author: Leeke, P.B.
Year: 2002
Title: List of common names of fishes in Portugal.
Source: Personal communication, August 21, 2002.
Author: Blanc, M., J.-L. Gaudet, P. Banarescu and J.-C. Hureau
Year: 1971
Title: European inland water fish. A multilingual catalogue.
Source: Fishing News (Books) Ltd., London.