I'm going to have to refute the idea of single otos dying off. I still have the one in my ten gallon tank whose friend died a year ago. He or she is showing no signs of stress or sadness at all after a year.
I've got my two with a D.Gourami and a two feeder guppies. The gourami and bettas are always hanging out together. I've got some aponegaton (sp?) plants in there and they love to explore through it. I think lots of plants will give them enough things to do.
I'm going to have to refute the idea of single otos dying off. I still have the one in my ten gallon tank whose friend died a year ago. He or she is showing no signs of stress or sadness at all after a year.
Not saying that it always happens, just that in my (and most of the fish keepers I know) experience it happens more often than not, but when you buy in groups you tend to have better luck. Thus, I recommend getting atleast 2.
