Ottos are usually tolerated well by fish that don't tend to tolerate much. I think it would be okay to try assuming you have a back up plan and enough room in your tank!
My beta ignores both the otos in his tank. Actually, he pretty much ignores everything in his tank and spends the day pacing back and forth. But I've definitly never seen the otos get picked on or anything.
My beta ignores both the otos in his tank. Actually, he pretty much ignores everything in his tank and spends the day pacing back and forth. But I've definitly never seen the otos get picked on or anything.