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Social Behavior
Kin Recognition
The ability of some fish to distinguish related from unrelated conspecifics via chemical cues - guides shoaling preferences and mating decisions.
Trigger: Food Function: Prefer relatives in social interactions
📖 Overview
Salmon returning to natal streams recognise siblings by chemical signatures. Zebrafish preferentially shoal with kin over strangers. Cichlids brood-tend only their own fry, distinguishing them from other cichlid fry via smell. Kin recognition suggests fish social intelligence is more nuanced than mere group cohesion.
✨ Fun Fact
Coho salmon parr can distinguish siblings from unrelated fish based purely on water-borne chemical cues - a capacity that likely helps in stream nursery competition.