hey everyone. i have had a problem with my hifin spotted plecos. I bought one with my starter fish but we noticed that his sides looked a little puffy but he wasn't fat and he died suddenly one day. so we got a new smaller one a few weeks ago and he just died and had that stuff on his side. [the stuff with the new one was very white] also he wouldn't eat that much. if u have any idea wat to do or if it common please help!!! 
