Thanks for all the help, I didn't think it looked like an illness, but I'm new to Gar, I mostly keep cichlids and plecos. As far as decoration the tank has flag stone, I didn't think of the possibility of a scrape, like I was saying, the fish appears normal other than the wound.I just tested water and everything is normal. I know nitrates can't be "0" it's actually between 5.0 and 10 according to API Freshwater Master test kit, just said 0 because I was in a hurry last night. I also was trying to avoid meds as I read Gar don't take well to them. So I guess I'll just keep an eye on it, and keep up on my water like normal.