Quote Originally Posted by Trillianne View Post
Their bellies should look normal flatish/slightly rounded if they have eaten recently.

This low quality photo is mine to compare normal pleco belly:

If it looks more like its swallowed a marble, that's a sign of illness and bloat.
If it looks concave (caved in), then the pleco is starving for some reason.
Ah, I see! I'll be checking in with my pet store to see what healthy ones they have in stock, if any.

I was once told to purchase the largest plecos/otos. Supposedly those are the ones that have survived the longest. Is this true?