There are some really weird Laws in the world but a Law related to fish sounds weird itself.
5 of the weirdest ones are here, hope you like it ;)
It's illegal in Oklahoma to get a fish drunk. (Like someone can actually make it drink alcohol).
In Seattle, goldfish can ride the city buses in bowls, but only if they keep still.(If they move, will their bowl would be imprisoned ???)
In Utah it is illegal to catch fish from the back of a horse and in Idaho, it is illegal to fish from the back of any animal.(Are they afraid, that the animal will also learn fishing ??? )
It is not legal to go whale fishing in Nebraska( People were trying to eat whales???)
In Liverpool, it is illegal for a woman to be topless in public unless they are a clerk in a tropical fish store.(I know what you are thinking, "Next destination: The tropical fish stores in Liverpool" :P )