Little fin my oranda got stuck under his bridge yesterday.
I was looking around for him and I couldn't see him anywhere.
So, i turned the filter off (for only a second) and listened because I swore I heard gravel moving.
When I found him, he was trapped under his bridge.
I removed the bridge...
Large algae eaters can get quite aggressive , when they are small they are content to eat algae , but as they grow they become meat eaters. The previous poster is right.
What is the problem, is it dying? When it stops swimming, it floats tail end up, upside down and just floats like that with his head pointing to the bottom. Then it starts swimming again and is normal...