Otos are a little hard to take care of. They are very sensitive to water conditions.
I currently have a school of 6 (was 7, 1 jumped out while I was constructing a lid and died) White Cloud Minnows. They are nice looking fish and My betta leaves them alone. Another one I've heard does well and look great (they look like mini rainbow trout) are Galaxy Danio/Rasbora. I've heard tetras work well mostly as well.
I also have around 8 or so Mixed Ghost and Cherry shrimp and 1 Mystery snail for a cleanup crew. The ghost shrimp do better with the Betta i think, cause they are bigger then the cherry shrimp. A few of my cherries got eaten i think. Amano Shrimp also get bigger then Cherries.
I put them all in together. Moved the Betta from his previous 5 gallon home to the 10g at the same time I bought the Minnows, and all worked out well. My Betta isnt very aggressive tho.
The only thing you wanna be careful of is, if your new tank is going to start over the cycling process, you wanna start out with just the Betta (and the shrimp, since they have almost no bio load), wait a few weeks, then add the school of whatever you are gonna get. Otherwise you'll be doing water changes every other day cause of the heavy bioload in an uncycled tank. I used the same filter (alongside the new filter), gravel and drift wood from my previous tank to help it cycle quick.
I currently have a school of 6 (was 7, 1 jumped out while I was constructing a lid and died) White Cloud Minnows. They are nice looking fish and My betta leaves them alone. Another one I've heard does well and look great (they look like mini rainbow trout) are Galaxy Danio/Rasbora. I've heard tetras work well mostly as well.
I also have around 8 or so Mixed Ghost and Cherry shrimp and 1 Mystery snail for a cleanup crew. The ghost shrimp do better with the Betta i think, cause they are bigger then the cherry shrimp. A few of my cherries got eaten i think. Amano Shrimp also get bigger then Cherries.
I put them all in together. Moved the Betta from his previous 5 gallon home to the 10g at the same time I bought the Minnows, and all worked out well. My Betta isnt very aggressive tho.
The only thing you wanna be careful of is, if your new tank is going to start over the cycling process, you wanna start out with just the Betta (and the shrimp, since they have almost no bio load), wait a few weeks, then add the school of whatever you are gonna get. Otherwise you'll be doing water changes every other day cause of the heavy bioload in an uncycled tank. I used the same filter (alongside the new filter), gravel and drift wood from my previous tank to help it cycle quick.