A title of honor given to those have played Call of Duty for at least 13 hours straight. CoD Fish are devoted to the path of video games, and may go to great lengths just to play Call of Duty. however, they are not totally obsessed, unlike "stinky CoD fish". all hail CoD Fish!
"hey where were you yesterday?"
"off playing C.o.D. for 18 hours"
"nice. congrats, CoD Fish!"
White fish is a play on the phrase "wife-ish". (say them both really fast) When you are in a committed relationship with a girl, engaged to her, living together, raising a family together, etc. She is pretty much your wife in every way except there is no legal paperwork.
White Fish sounds better than wife ---ish because the ish makes it seem like there is a lack of commitment.
They have lived together for 20 years, have two kids, and three grand babies, but just have not taken to time go to the courthouse. She is his White Fish.
The soldier got deployed before they could make it down the isle. Guys in his battalion see his pictures and ask who the hottie is, he says "That's my White Fish".