Freshwater fish at the top of the food chain may evolve more slowly than fishes at lower trophic levels:
http://www.sciencedaily.com/releases/2009/07/090728125824.htm
Freshwater fish at the top of the food chain may evolve more slowly than fishes at lower trophic levels:
http://www.sciencedaily.com/releases/2009/07/090728125824.htm
Tags: Giant fish facts · research · science
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