Coevolution Mechanisms in Lake Biomes

Camouflage - Lake Trout (Salvelinus namaycush) have a natural camouflage on their bodies that helps them blend in with the soil at the bottom of lakes while searching for prey.

The natural camouflage of a Lake Trout.

Mimicry - Rhinogobius, a tropical freshwater gobie, has an interesting use for mimicry. Occasionally, male gobies will develop female-like exteriors and mimic female behavior. This is so that these males can get closer to the still unfertilized females without competition from larger males, increasing their chances of fertilizing the eggs.

A male Rhinogobius mimicking a female Rhinogobius.