O cat
I started with one o-cat and he did great, I have bought more, but after about a month only one is left alive. I'd like to think that this is my original o-cat, but I really don't know. Before dieing off, all the o-cats were looking fat and healthy; they were almost always pooping, which I have understood as a good sign. Their deaths seemed odd in that they died off together, like some sort of suicide pack. It could be a water quality issue, but I do a partial water change and test regularly. I assuage my guilt in thinking that they were not as healthy as I had thought. After all, I still have one o-cat going strong for almost a year now. I'll add a molly to help with the algae and try out some more o-cats... They are a cool fish.