I mean if VIllain is opening only 7%. I think most of his hand range is Broadways/JJ+ hand range, which actually makes the flop favor villain alot more in terms of connectivity. I wouldnt want to bet the flop, since i wouldnt want to be faced with a C/R on the flop, if villain does that, thus making our drawing hands bad in terms of pot-odds to continue.

*) I dont hate the call given the Q(d) and K(d) blocker effects.
VIllain clearly doesnt have the following value combos
QK/AQ/AK/TQ/TK/JK combos of diamond flush given blocker effects.
your only losing to probably AT or AJ diamonds here.

*) I cant see him raising 89 diamonds here, given he doesnt have it in his preflop raising range.

Furthermore, you can still be beating hands like QQ/KK/QKs which he is jamming for value.

Call

I am folding this hand pre. Cold calling with hands like this against a tight raiser at 5NL where rake is a massive consideration is going to be breakeven at best and likely -EV, even if villain is an obvious fish like this guy is. The raise being as large as it is makes this an even easier fold, there are tons of better spots that will come up against this guy.

The turn min raise is extremely nutted usually, but given your hand I don't think you can get away from it. I imagine you are running into AJ/AT of diamonds a lot here tho, but there may be some sets that make this play.

I think we played a few hands together, if this is your sn on stars. Anyway, I think this hand is a 3bet from lp vs ep/mp, or a fold. I don´t like flatting a raise with 65s. Also reverse implied odds when you hit your flush etc.

I expect a guy like this to be opening a range that is pretty much face up and value heavy here. I can't imagine he is thinking "Ohhhhh, there is a OOP poster, I am going to 5x it with my entire range since there is more dead money dead money in the pot and I want a bigger pot with my value and I want to maximize FE with my bluff/speculative stuff".

Folding pre.

I don't quite know if I ever have a calling range here. With reads, you can potentially trap AA/KK or AK (to keep in all of his weaker Ax) but this sample is no where near big enough to start making exploitative plays. Just pick your best linear 3 bets and play 3b/fold to stuff like this.

As played, I am curious as to your thought process when you bet the flop. I am thinking I always check this back or bet like $.15 or $.20 (low frequency, with reads). If he is checking strong, you get a free shot to outdraw him. You currently have SDV vs. his whiffs. You control the pot a little bit on those occasions that he has a monster or makes one on the next street. The biggest reason is that you are going to be forced to fold if he check/raises you. If he has sets and 2 pr+ in his check/raising range (he should), your two 5's and three 6's are no good so now you are limited to only flush outs. And if his check/raising range includes FD's, every one of them beats you. I think you should try to take the free card on this flop.

As others say, fold pre. Against big bet sizes and tight ranges, you want to mostly 3-bet or fold and/or call implied odds hands.

As played, I would check flop. For pair + FD type hands, the pair is typically more important than the FD. So you generally want to play a small to medium pot, where you have a lot of equity. If a lot of money goes into the pot, you are flipping at best.

Once you hit your flush, you have to go the distance with your hand. This is why you called pre, right?