I'm having trouble naming a Carvanha. It's female, and one of my favorite Pokemon because when I was a kid I tried to release it and it came back because it was the only Pokemon I had left that knew Surf. Any suggestions?

The only possible name I have so far is Voltar, which means return in Portuguese. Both Piranhas and Sharks are from Brazil, which is why I picked the language. It doesn't sound very feminine though.