I'm surprised that we don't have a topic for this yet. Anyone here please post with experiences, what does and doesn't work. I realized that I want to know my options if ever my cories get sick.
Invertebrates include crabs, crayfish, shrimp, snails, and clams.
Scaleless fish include, but are not limited to, corydoras cat fish and all other catfish, knife fish, eels and ropefish, Certain eels and ropefish, may be salt tolerant to a degree due to naturally occurring in brackish water, but will prove intolerant to medication.
I've only found info on treating ich. If anyone has a good resource, please post it.
For treating ich, the safest way is to simply raise the temperature to 82F. If illness prevails...
Medication that should NOT be used (ingredients to watch for):
-copper based medications (most likely kills plants as well.)
-malachite green, formalin (use 1/2 to 1/4 recommended dose, always in a separate QT tank as it will stain your silicone in the aquarium, among other things).
-medications such as Melafix and Pimafix (also danger with any anabantoids)
-natural medications such as Pimafix and Melafix (for inverts)
It is ALWAYS vital to watch any scaleless fish for heavy breathing and deviant behavior (aside from what the illness would be causing.)
Source: Treating Ich/Ick on Scaleless Fish Species
Anyone want to add anything? We need more info than just ich, lol.