I bought another jag a few months ago. It was so stressed, besides its shredded fins, it was almost pure black as a result of being constantly terrorized in the tank, so taking pity I bought it, and I didn't really notice it was also missing an eye till after the fact when it settled down at my house. It has quite the personality, fins are healed, and looks like he is going to be a real nice when grown. So I say take the chance if you like it or feel attached (as long as you can provide for it too)...reguardless of the deformities or abnormalities that may come with it. It's your fish, so really what matters is what you think, not others.