What do I do? Stocking in siggy. I'm pretty sure it was the silver tips, but this would be the first sign of agression I've seen from them. The phantom that got nipped was a female, btw, if that makes a difference... Sorry, can't get a good pic. The whole top part of it's tail is gone and the bottom part is frayed. It's swimming around like normal though. I've had the fish since mid september.