from http://www.scienceblog.com/cms/node/7843 :
A biologist at Washington University in St. Louis has been studying genital size in the male mosquitofish. His findings?
Female fish prefer males with larger sexual organs, so having a large organ is an advantage when mating. On the other hand, a large organ causes more 'drag' in the water when fleeing predators, so well-hung male mosquitofish are more likely to be eaten -- an obvious disadvantage.
So, be glad you're not a fish!
A biologist at Washington University in St. Louis has been studying genital size in the male mosquitofish. His findings?
Female fish prefer males with larger sexual organs, so having a large organ is an advantage when mating. On the other hand, a large organ causes more 'drag' in the water when fleeing predators, so well-hung male mosquitofish are more likely to be eaten -- an obvious disadvantage.
So, be glad you're not a fish!
