GRRRR

[Pufferpack]

Try giving them a slice of cucumber, the Danios won't be able to eat enough of it before the Oto's can get in to feed. I usually leave a chunk in overnight and remove it the next morning or afternoon. Once or twice a week keeps all 6 of my ottos fat and happy.

 

[Ruby Shark]

Thanks for the great suggestion Pufferpack!