Hello, everyone. Over the past several months, I've slowly lost all 5 of my Paleatus Corys due to some unknown disease. It started with a small cut-like wound that eventually turned in to a hole in to the fish's muscle primarily on top of their head before the fish eventually died. This occurred one by one with all five fish and there would never be two that had it at once. I could not identify what it was and hence only treated with salt a couple times at the start of it, which didn't help at all. Today, I just lost my last Paleatus and while my single Aeneus is and has been healthy, I worry for it as well as the other inhabitants of the tank. About two weeks ago, one of the three Tatia intermedia wood cats in the tank developed some sort of rash-like mark on the side of its body. I'm not sure what it is although it does not appear to be growing and the fish is behaving normally (the Corys were too, however). I would hate to lose any more fish in the tank and my Tatia are such personable, active, and actually diurnal fish so I would especially hate to lose any of them. The mark may possibly be a heater burn though the heater is suspended pretty high in the tank right about above the sponge filter. Getting to the tank itself, it is a standard 10 gallon heavily planted with Cryptocoryne, Java Fern, and Java moss with a stock list of 5 adult swordtails (plus dozens of fry from 0.25-1"), 1 male Betta, 1 Aeneus Cory, and 3 Tatia intermedia. There is also a large abundance of snails of two different smaller species and there is probably ~100 adult snails crawling around plus juveniles. I did a 50% water change and added a tablespoon of salt about half an hour ago and my normal schedule is two 50%s weekly. If you guys have any idea what this is, or if it is a disease or simply a scrape from fighting with each other or a heater burn, please let me know. Thank you.
PS, that spec on the "rash" is not part of it, it's just a grain of sand that fell on the fish.
PS, that spec on the "rash" is not part of it, it's just a grain of sand that fell on the fish.
