Cayman's tailbiting has led to a major infection.
Tried to treat with Aquarium salt, but it made his buoyancy issues worse. So I switched him to Epsom salt.
Callistra recommended some antibiotics, but Petsmart either didn't stock them, or else was completely sold out! So I went with Maracyn (eryrithromycin). It's for gram-positive bacteria, and Callistra's recommendations were all for treating gram-negative, but.... I'll give it a try. Who KNOWS what the little guy has picked up.
I did notice two things:
a) The medications cost more than the fish originally did.
b) There was a reallllllly cute blue butterfly delta tail there. And I realllllly wanted to bring him home. But I didn't. Because I have no more room. And I already have my hands full with Cayman.
Note to self: do not return to Petsmart until the cute little blue butterfly DeT has been sold.
In happier news, Fiji is just fine, and Tahiti has been building really impressive bubble nests.
I guess Fiji and Tahiti are my low-maintenance fish, and Cayman has enough issues to keep me busy 24/7.
Poor little Cayman. I think the Epsom salt is working though. He pooped tonight!

So I fed him a single pellet. He was hungry. (Which is a good sign.) He has almost no fins (anal or caudal) left though. It makes him swim funny.
Will do a full WC for everyone this weekend, and retreat Cayman with his Epsom salt and Maracyn mixture. I think he needs to be on it for 5 days. (Need to check the box!) I may have to go in search of someplace that has other meds this weekend, too.