It castrates them, it changes their color from transparent to bright red, it makes them live longer, and as biologist Nicolas Rode has found, it makes them swim in groups.
izkastrē tās, maina to krāsu no  caurspīdīgas uz koši sarkanu, pagarina dzīves ilgumu, un, kā noskaidrojis biologs Nikolass Rode, liek tām peldēt baros.