"Finding" Nemo

Real quick as a reading break: I'm reading a book by a guy named Francis called Why Men Won't Ask for Directions, a sort of polemic against the pure adaptationist approach to explaining features of organisms as purely due to selective advantage. Combine that with a little snippet I read from friend Katherine's blog last night about how she doesn't like unreality, even in comic book science fiction (she was specifically referring to how the Joker and his minions in Dark Knight could easily plant rigged explosives on ferries with no one noticing or checking the hull before embarking), and I'm getting an odd scene in my head. See, it turns out that clownfish, the little critters who like to hang out in sea anemone for protection, have the interesting physiological ability of being able to change sexes when circumstances dictate. A male and a female mate and hang out in the same anemone their entire life. And if the female of the couple should happen to get eaten while out hunting, no problem, the male just turns into a female, and then mates with one of his/her juvenile fish (who can convert from pretty much no-sex to male for the occasion). And they have more juvies, and Elton John sings "The Circle of Life" and everything's good. One problem: this is what a clownfish looks like:

Alls I'm saying is, that little factoid did NOT come up in the movie.