mudsticks
Squire
Hilarious. Fish puns are actually the entirety of acceptable left-wing humour, as decreed by Karl Marx in the introductory paragraph of Das Kapital, back in 1867. The book itself is actually stuffed with fish puns. To the gills, in fact.
Pretty sure the sequel allowed funnies about molluscs too..
"I used to keep racing snails.."
Etc etc