1/2, 9 handed. Hero covers every villain.

OTTH

Fish that plays pre flop pretty passively, though more aggresively than the population, and post flop pretty damn aggressively limps UTG ($170 stack), hero raises to $16 +1 with 9 9(should've gone $20 at this loose passive table), and a tighter, what I'd assume break even player calls OTB ($250 stack), whale calls SB ($200 stack), and fish limp-calls.

Flop ($66): T 4 2. SB checks, UTG checks, we bet $30, and only UTG calls.

Turn ($126): 5. Villain leads for $60 with $124 total ($64 behind after $60 bet, sorry, tired, couldn't think of a better way to phrase.) I only have about 20 hours with villain, and he regularly leads the turn. I've seen one instance where he turned two pair, two instances where he was bluffing but picked up equity, and one complete airball bluff. Hero?

Can he call your raise preflop without a pair, Ax or FD in his hand? Presumably not at his stack size, since he has 20 hours with you and knows you're aggressive and will put him all-in.

He'd likely jam his sets either otf or ott. So with what can he limp, flat flop and lead turn?

I think it's his A4/A5/A2, his 54s (only 2 combos), his A3s (4 combos), his 43s (3 combos), and all his FDs obviously. We're ahead of most of this and only dead against 4 combos. We have some outs when we're behind his 54. I'd go ahead and put him all in since he won't give you anything if he misses his draws and I assume you're not folding anyway.

Flop might be a check 4 ways like this. A lot of hands that give you action on this board are ahead or drawing good. Even though it's the best possible over card, this might be a check & give up. I just hate these value-bluff spots.

Based on your read, I guess go ahead and put him in on the turn.

You describe villain as having some bluffs and semi-bluffs in his range. Against that this is a judgement call with less then top pair. My inclination is put him in on the turn. It's easy for him to have a draw that improved somehow and there is some chance you can get him to fold a bad ten.

Preflop having an aggressive donk in the pot makes me more likely to limp or flat call. You won't have as much trouble as usual building a big pot when you hit because the donk will take care of that for you. But you can only take that so far because you need to balance targeting the donk with playing the rest of the table.

Why do you say hands would be drawing good here?

What do you think of going like $20 otf instead?

Given stack sizes and pot size, stick it in. If he sometimes leads with increased equity there's a large number of Axcc hands, 1p+cc, 1p+sd hands that he can have.

Were sometimes beat, but given the pot and the effective remaking stacks, let's gii.

Having said that, check flop. 4 ways we are not often good. And rarely taking it down otf.

Do you know what your spr is against the whale? Half the table is calling a UTG1 7x +1 raise; you should just limp along. The pot is 16 + 16 + 16 + 16 + 2 = 66. The biggest stack now has 234; the whale has 184. The spr against the biggest stack is just over 3. 99 against 3 players is impossible to play at that spr.

Fish can play 10x as described (i remember playing K10, A10 horribly like this when i first started playing), even with Villain tendencies (and as per your observations a mixed bag of value, draws and bluffs) sounds like a hand to just give up perhaps?
wait and let him donk lead on you when you have better show down value.