[DJ88]

Scorpion,

I know this is a bit late in coming.. but..

You didn't need to terminate the fish. Expecially if it was a very small juvenile.

I had two cowfish and they both became stuck on powerheads. Many times.. as well they ran into my saddleback anemone one was finally killed by that anemone.. Not once did they release any kind of toxin. Where yours is so tiny the amount it would release is most likely insignificant when you look at it in comparison to tank volume. If they had been full grown possibly then. But my last cowfish was 6" long and it drifted into the anemone at night and didn't do anything other than have to heal after a bad injury..

Sorry this came so late.. but for future reference..