Don't minraise there (better not to minraise at all as standard). Only time I'll suggest minraising is from the BTN and even that most people will disagree with. It's just costing you money UTG, your range should be really strong which means you're going to pay off people playing drawing hands (so make the price steeper), you're often going to be trying to extract value post-flop and that's way more effective with a bigger pot (since post-flop bet sizes are based on pot size, every bb pre-flop makes a big difference). You're also playing 5nl were people will call way too wide, this is a much bigger mistake for them when you lower the SPR early on.
Stopping minraising = +EV
Flop, bet bigger. It's 5nl, people will pay you with Ax here and certainly weaker K's, some will even find excuses to come along with other random stuff. I bet 2/3 or 3/4 pot here.
Turn, the flush draw completing sucks but we're still value betting. I don't like increasing your bet size here though, I'm curious why you did.
River, betting pot here isn't bad, after your increasing your size when the flush hit it smells like a flush but still betting potsize with the probably best hand is never going to be bad vs random 5nl players.
When he shoves... eh... I hate this spot. I'm starting to think folding here vs fish is best but I've mostly always called here in the past and I don't think it's got terrible equity. So yeah, fold and hit something.