They would blend right into the algae, which would also fluoresce red, but they've got great vision, and they go through this long mating ritual, and perhaps they're using it in that effect.
Elrejtőznek az algában, mely maga is vörös színben világít, de a látásuk kiváló, és sokáig tart a párzási rítusuk. Talán épp ezzel álcázzák magukat.