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.
它们会立即混进 发红荧光的海藻里， 但它们有非常好的视力， 它们还要经历 漫长的交配程序， 也许它们的荧光是发挥这个功能的。