So...I had three otos...now two... in my betta tank to help clean. I've had them for about a month and they've been happy and healthy. Last night I noticed that one of them had a very swollen belly and its scales looked a little weird...sorta poking out. Aren't they supposed to be scaleless? Well, I could see them and feel them when I took him out. He was dead this morning. I'm suspecting dropsy. What do you think?
I'm also concerned that the flourish I started using had something to do with it. I admit that I'm using more than I should. Other than that, the water perameters are perfect and I've had no other problems.