I just dropped in one of my hikari wafers to feed my 6 corycats in the 20 gallon. I watched them pushing it around and it went under the driftwood. One of them tried to get it and I saw it thrash away in pain because a piece of sharp driftwood stabbed it in the eye. It's sitting in the corner gasping I don't know what to do., should I out it out of it's misery and if that's the best thing to do how would I do it and keep a clean conscience.....this happened about 5-10 minutes ago