Melanic body colour and aggressive mating behaviour are correlated traits in male mosquitofish (Gambusia holbrooki).

Abstract excerpt

Correlated traits are important from an evolutionary perspective as natural selection acting on one trait may indirectly affect other traits. Further, the response to selection can be constrained or hastened as a result of correlations. Because mating behaviour and body colour can dramatically affect fitness, a correlation between them can have important fitness ramifications. In this work, melanic (black) male...

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