Fish

An unskilled player, often one who plays extremely loosely, yet passively. The old poker adage from the popular movie Rounders claims, "If you can't spot the sucker within the first half hour at the table, then you are the sucker." In this case, the "sucker" is the "fish."
A donkey.

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Origin

A fish is not generally considered the most analytical of creatures, hence the basic reason why poor players are referred to as fish. The term also stems from the act of fishing. Just as fishing enthusiast casts a line into the water in to see if he can catch a fish, so does a poor player cast chips into the pot, hoping to catch a card.

Popular Uses

"All ya'll are a bunch 'o fishes if ya call without holdin' the nuts!" -Tight-passive old guy from Oklahoma who likes to play with a toothpick in his mouth

Hooks (pair of Jacks) are for fish. You've got to flop 'em, fold 'em, or fornicate 'em. -Johnny Moss

You Should Also Know...

One of the biggest pet peeves of solid poker players is when a know-it-all player berates a fish for a poor play. The fear is that this will either drive that player, and thus his money, from the table, or enlighten the fish to the error of his ways and put him on the road to becoming a good player. The line that people use to inform each other not to berate fish is "don't tap the glass," a reference to an aquarium.

Related Terms

vietcong01, stevesbets, Guy Laliberte, Robert Varkonyi, Eric Morris, Donkey, Calling Station, Shark