Organism
Killifish
TL;DR
Killifish are the low-predation pressure species in Trinidad guppy streams.
Killifish are the low-predation pressure species in Trinidad guppy streams. They prey only on juvenile guppies (not adults), creating selection pressure for delayed maturation, larger offspring, and investment in growth - the 'low-mortality environment' that drives Atlantic Salmon-like balanced allocation strategies in guppy populations.
Notable Traits of Killifish
- Predator of juvenile guppies only
- Creates low-mortality selection pressure for adults