I got an new albino pleco it wasn’t the bristle-nose one , it was the kind that gets too big. I put them together with my other plecos which is bristlenose plecos and other different plecos and this one was a bit smaller than the others and it was eating a lot. Today after I came back from work, I saw the plecos death on the bottom of the tank. I don’t know why it died, I don’t see any sign of disease on him. His stomach looked completely greenish. I cut him to see if he had eaten, and all I could find in his stomach was green algae nothing else. I am assuming maybe he had a hearth attack and died because other plecos maybe have been bullying him. Could it be that he died becuade of bully? Can there be any invisible disease? Should I be worried about my other plecos?