Klupp R. author 1991 Fisch Fortpflanzung Salmo trutta fario exported from refbase (http://www.pivi.de/refbase-0.9.5/show.php?record=855), last updated on Tue, 09 Jun 2026 22:41:38 +0200 text Klupp1991 Zeitschrift, Artikel 228 230