That's exactly what the Sockeye Salmon does - normally blue and silver they turn red and green before spawning.

而这正是红鲑鱼们所面临的情况——它们通常是蓝色和银色的，但产卵之前它们就会变成红色和绿色的。

youdao

That's exactly what the Sockeye Salmon does - normally blue and silver they turn red and green before spawning.

而这正是红鲑鱼们所面临的情况——它们通常是蓝色和银色的，但产卵之前它们就会变成红色和绿色的。

youdao