I think he has internal parasites.
A while ago his fins/rays were shrinking but there were no dark edges or fuzzy patches. Either way I treated him for fin rot and it seemed to stop a little bit.
But ever since he hadn't recovered entirely and never got the cute little angry attitude he had before and tonight after reading stuff here and in other forums I figured out why:
Parasites. Internal parasites.
He eats almost every day but looks thin, his last stool looked white/transluscent and stringy and wouldn't fall unless he flashed it off.
He's had swim bladder issues on and off which I treated with epsom salt. Last time it worked faster because he had a smaller tank but now its taking some time to heal.
I read that internal parasites can cause their fins to deteriorate just due to lack of nutrition, the white and stringy stool and the chronic swim bladder.
Poor baby, I've been treating him for fin rot and using maracide in case of any fungus might've been causing his lack of recovery.
I read somewhere that a quarantine tank and API General Cure/ Tetra Parasite Guard were good meds to use for this, getting some tomorrow.
Any advice on treating a whole 10 gal tank? He shares one with his buddy Leo but leo has shown absolutely no signs of infestation or illness. He's very perky and very flarey but I want to be safe...
Poor Raph :<
Here's a compare and contrast picture: Left - a couple months ago when i bought him, Right - His current state