UTG was a 41/25 fish so I was 3 betting for value. Damn nit had to interfere!

My calculation for pot odds was wrong above, it should be:

3.35 / (3.35+4.97+1.84 + 3.35) = 25%.

Even so, I don't think he has many jacks in his range and although he's a 5nl nit I'm not convinced he'd play them like this. Defo a fold.