"http : //www.imagequest3d.com/cgi-bin/ ... c & amp ; tt= & amp ; bool=and How did the anglerfishes evolve their rods and lures ? ... and why do they need such big teeth ?"
"I 'll address the later question . They may not `` need `` teeth that big , I could n't say . Just because a creature has a feature does n't mean its necessary or useful . While evolution does select for useful traits and against harmful traits , that does n't mean that a trait wo n't develop that is simply odd . As long as it is n't particularly negative there 's no reason to assume it will go away , and so sometimes you get traits that are n't `` useful `` , they 're simply not harmful . Those teeth could be such a case ."
"How did the anglerfishes evolve their rods and lures ? do they need such big teeth ?"
"They may not `` need `` teeth that big , I could n't say . While evolution does select for useful traits and against harmful traits ,"