#5 Calling PFR OOP w RIO hands and TPMK stack offs. Fish are notorious for calling preflop raises OOP with KJ, QJ, Ax hands and will call pot sized bets to include stacking off with TPMK. And I don't just mean KJ on a J 4 9 2 2 board. I mean T8 on a 8 4 2 7 2 board. EDIT: Assume PFR is from tight/strong player.
#6 Reading players for EXACTLY two cards, namely AK: Fish are adamant in their psychic ability to read you for exactly two cards, it will almost always be the two cards they can beat and the fish favorite is to put all preflop raisers on AK no matter what happens post flop.
#7 Playing Monster Draws Passively even in position. When I see a fish call a preflop raise with T
8
and then the board runs 9
7
4
2
5
and there is weakness shown throughout the hand and at no point do they retake the initiative with a raise or even bet out, I now know they are a fish. They let the river check through in position and they lose to Ace high or even King high and they think nothing of it and blame the dealer for not giving them their card.
#8 Results Oriented Thinking. Fish can't help but to use results to dictate what they should have done. When they fold to a overbet on turn and then hit their card on the river they will say, "Man I should have called". Or, when they are facing a small bet on turn and they fold the nut draw and the draw misses on river they say, " I made a good fold".
#9 I Know I'm Beat, I Call...: Fish are just biologically incapable of folding made hands. It causes them physical pain to fold TPWK, baby flushes, or idiot end straights despite insane action that screams they are beat. Once you witness a fish do this, do not try to bluff them no matter how scary the board gets. Just value town and prison rape them.