Still eating well and swimming like a hyper kitten every so often. I've changed 50% of his water today and will continue doing the same each day.
I'm happy there is still iridescence in his/her fins. Even if he/her turns out to be something common like a VT or a CT it should still look lovely. I think I'll still go to Petco again on Thursday, though, but only to see if they have a double tail who I like better than Gill(y). At this rate, though, I'm not sure if that will be possible. I will also look into tank dividers for the 10 gallon.