Villain is a fish, with 50/9/10
I'm running 28/12 since the blinds are low and i've had lots of hands speculative hands, like pairs, sc's etc.

In a weird spot here seeing as so many players see the flop and its likely someone has a big draw.
Is b/f super small on the river good against fish like this, he's definitely not folding a worse king and i don't think fish will raise the river too often as a bluff so i can fold happily.

Thoughts on all streets and sizings much appreciated.

fold pre
as played c/f river

( I just read something in another post about "reverse implied odds w KJ")

fold pre /hand

I personally think folding KJ pre is a mistake. We're super deep and the table has a few fish. I'm fairly competent postflop and will be able to determine when i'm not good.
I'm just wondering whether the river is just a simple check/fold tbh.
The only problem i'm thinking is that when i check the river i'm opening myself to bluffed off my hand by a worse pair, because these fish will call in the hopes of making two pair etc and have a default, bet when checked too mentality.

c/f river

Furo, sizing thoughts on previous streets?

its w/e if you bet 20 more otf or 40 less OTT, ppl dont change their ranges (especially 50/9 donks)
just dont turn it into a bluff by betting 3/4+ pot or bet 1/3 pot and give everything direct odds. make your standard cbet, it does not matter if its 47% pot or 58% pot, ppl who isolate spots and insist on cbetting 5% bigger/smaller are idiots.
obv there are spots where you should not bet >1/3 pot (stacksize or read related vs some opponents), but overall in std spots it does not matter.

I don't see people turning 2nd pair into a bluff here on the river and are likely folding the turn with these hands. Even if someone flatted K9s, he likely just checks back river. K10s got there and flush so it does indeed look like a simple check/fold spot on the river. I'm also in the fold pre camp.

fold pre...open KJ suited...
flop and turn seem fine...river is kind of ugly and I dont love your sizing...either c/X or bet fold a little bigger

This.

Alright lads, thanks for the input.

What shah said. Except the fold pre part.

9 handed...probably readless...KJ off...UTG...to each their own I guess but not sure what we really want to accomplish by opening here...I guess K10 could stack off 160-300BB deep on KXX

Well you aren't wrong. I'm just a fish who hates folding.

In a field with obv fishes open pre is fine.
More otf ~200.