GTO makes you unexploitable. But maximum EV is extracted when you identify each opponent's tendencies and adjust your game to their specific weaknesses. For that, players are classified into four basic archetypes based on two key statistics.
In this guide you'll see how to identify each type, what mistakes they make and exactly how to exploit them to maximize your winnings in every session.
1. The Statistics That Define Playing Style
Before the archetypes, you need to know the two fundamental metrics that HUDs and trackers show:
VPIP (Voluntarily Put money In Pot)
% of hands where the player voluntarily puts chips in preflop (calls, raises, limps). Measures how many hands they play.
PFR (Pre-Flop Raise)
% of hands where they raise preflop. Measures their aggression. The VPIP−PFR difference indicates how much they enter by calling rather than raising.
| Type | VPIP | PFR | Style |
|---|---|---|---|
| TAG | 15–25% | 12–20% | Tight Aggressive |
| LAG | 28–40% | 22–35% | Loose Aggressive |
| Nit | 8–15% | 5–12% | Tight Passive |
| Fish | 35–60% | 5–15% | Loose Passive |
2. TAG and LAG: The Aggressive Players
TAG (Tight Aggressive) — The standard reg
The TAG plays few hands but bets and raises them with force. It's the profile of the average winning player. Their range is solid and predictable: when they enter a pot, they generally have something.
How to exploit them:
- → Steal their blinds often: they fold more than 70% of the time out of position
- → Fold to their 3-bets (they almost always have real value)
- → Bet c-bets on boards that don't connect with their early position range
- → If they check the flop and turn, their range is weakened: bet the river as a bluff
LAG (Loose Aggressive) — The difficult player
The LAG plays many hands with a lot of aggression. Their range is wide, so on average they have weaker hands. They generate a lot of pressure but also bluff more than average.
How to exploit them:
- → Call them more often in position: let them bluff and collect on the river
- → Don't back them down with light 3-bets: they have range to call
- → Bet thin value: they call with worse hands than the TAG
- → Avoid bluffing from weak positions: it adds more pressure, not less
3. Nit: The Rock Player
Nit (Tight Passive) — The rock
The nit plays very few hands and almost never bluffs. When they enter a pot, they have something real. When they bet strongly, they have something very real.
How to identify them:
- → VPIP < 15%, rarely seen in big pots
- → If they 3-bet, they have AA/KK/AK almost always
- → Can go hours without seeing an interesting hand
How to exploit them:
- → Steal their blinds constantly — they fold more than 75% without a fight
- → Fold to any sign of strength from them (bet, raise, 3-bet)
- → Don't stack off with marginal hands vs a nit: they never have just top pair
- → If they enter a pot from EP, respect their range: it's very solid
Real example
The nit from UTG open-raises. You have KK on BTN. Normal 3-bet. He 4-bets. Even though it hurts, consider that his 4-bet range from UTG after your 3-bet is almost exclusively AA — possibly AK.
4. Fish / Calling Station: The Gold Mine
Fish (Loose Passive / Calling Station)
The fish plays many hands and calls too much. They rarely raise or fold. They are the most profitable type of player to play against, and also the easiest to ruin with the wrong strategy.
The 5 golden rules for exploiting a fish:
NEVER bluff them
The fish calls with any pair, with gutshots, with ace-high. Every bluff against a calling station is EV destroyed. If you bet without value, you're giving money away.
Bet thin value relentlessly
Second pair, top pair weak kicker, overpair: bet all three streets. They'll pay with worse.
Raise preflop bigger when they're in the pot
Raise to 4–5bb instead of 3bb. They'll call anyway and you enter the flop with a bigger pot.
When they bet, they have something
The fish rarely bluffs. If they bet strongly on the river, respect their hand.
Play more hands in position against them
If there's a fish at the table, prioritize sitting to their left (to have position) and increase your VPIP selectively against them.
Conclusion
Exploitative play doesn't replace GTO — it complements it. Use GTO as a base and adjust when you recognize a clear pattern. A fish at the table changes your entire strategy: more value, zero bluffs. A nit behind you changes how much you open. Correctly identifying your opponents is the skill that separates good players from very good players.