Why are brook trout famous for eating anything?
Because their home waters make specialists starve. Brook trout dominate infertile, acidic headwaters and beaver ponds — cold, gorgeous, and poor, with a fraction of the insect biomass of a rich valley river — so natural selection built a take-everything opportunist: aquatic insects, terrestrials, minnows, leeches, salamanders, and each other, all in one stomach. The short growing season at brook trout latitudes (often 45–55°N) sharpens the urgency — a fish with four ice-free months cannot afford to inspect and refuse. For anglers this is the great brook trout charm: they hit flies, spinners, spoons, and worms with equal enthusiasm, and a poor cast that would empty a rainbow pool often still catches the brookie. The catch: that same eagerness makes populations easy to overharvest.
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Esta respuesta es parte de una lección más larga — montajes, diagramas y el porqué.
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