Hi, I need some help. I'm stocking my 46 bow front today and I got 22 neon tetras from pet smart. After I put the fish in my tank I noticed 1 has some discoloration in the middle of the body. Is this NTD? Should I put down the fish as a precaution to save the other tetras in the tank? The tanks been cycling for last last 3-4 weeks and I did a 90+% water change this morning before I went and got the fish so pretty sure the water parameters are good

