Yo creo que fishy se refiere a los chochetes.
Bueno, mirando el urbandictionary puede que sea esto:
5. Fishy
In the gay world, more specifically amongst homosexuals (HE AQUÍ LA PISTA DEFINITORIA), to act or be fishy is to act or be feminine. Also in the tranny world, to be fishy means to excel at being a woman, without much effort. Fishy is an adjective from the noun fish.
#1 - Girl, I didn't even recognize Jacob, he looked so
fishy, who did his make-up?
#2 - Look at Matt trying to be all fishy with those fake eyelashes!!