Heya... if anyone can give me some help it would be great!! I havent ever seen any of my fish do this before and Im not sure what to do... my black common pleco I have him about a year and a half now hes about 10" give or take. I noticed him doing it this morning and again last night and hes been doing it the past hour that I have been watching him. He cant seem to relax everytime he tries to sit on the bottom he keeps twitching and he cant stay on the side of the glass without twitching. I have tested the water and its perfect and whacked up extra air into the tank but have no idea whether its going to help or not has nayone had an experience of this and could possible give me some help?
