I noticed Neptune acting "off" yesterday, but I've been so busy with finals I didn't think anything of it. I don't think he ate last night (Monday), and I fasted him Sunday.
Tank size: 2.5 g
Food: Omega one pellets, NLS pellets, frozen brine shrimp (San Francisco brand), frozen glassworms (San Fran brand), frozen bloodworms (Hakari brand). The past week he's had only NLS and Omega One. I've been so busy, I haven't had a chance to thaw the frozen out.
Age: I've had him a year as of Feb 2013
History: He's had tail biting in the past, and has had fin rot in the past.
Parameters: I haven't checked yet.
Water changes: 1 50%, and 1 25% each week, with 100% each month. I changed 100% on Saturday.
He lives by himself:
Treatment: I haven't started anything, but he has IAL in his tank and I use Stresscoat +.
In these pictures you can see that he has a little bit of black in his tail. It's like a couple lines in his tail, but the tail itself isn't broken.