londonbard

[Error: unknown template qotd] That's not quite the truth about hyenas! Do they laugh so they shall not weep?

However, wrasse always have one male in the group; if he dies the biggest female changes sex to keep the group reproductive.

One species of catfish tricks a species of cichlids into adopting their eggs, and the cichlids then carry the catfish eggs in their mouths until they hatch.