Pussywillow.

Fish names also seem to be pretty good:
Bonefish
Brown trout
Black swallower
Chubsucker
Hairtail
Harelip Sucker
Hog Sucker (pretty much any suckerfish, I guess)
Jewfish
Sacramento Splittail

And then I got bored. But I did find a fish name I'd like to use for a nickname: Sarcastic Fringehead.
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"Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars." - Martin Luther King, Jr.