look up any word, like blumpkin:
 
1.
Merchant Navy or Trawlers
Any of several species of fish that congregate around the sewage discharge pipe of stationary ships or boats to feed off fecal matter that is discharged overboard.
Uhg! throw that one back its a shit fish.
by Lee W November 18, 2004
 
2.
Used to describe the fact that the only fish left in the sea are the shit ones.
KD: Why can't I get a boyfriend?
Josh: It's probably because you're a shitfish.
by katie fur furs July 21, 2008