One of my ottocinclus is munching on a little brown algae that's on the aquarium heater's power cable. Not dangerous, I guess? I don't think they can actually bite through it and expose the wire...?
It's probably just scraping algae off the cable, not eating the insulation. It could eventually chew through the insulation, it were really determined, but it would take a fish the size of an oto a really long time to do that. You probably have nothing to worry about.
My otos are the same. They are just eating the algae off it.
No problem, it's just scraping the algae off. Might get though the cable itself in couple of 100 years or so, so nothing to worry about. Ian
No it isn't dangerous at all. He will be fine. I love otos. They are so darn cute.
