I have both BN and Otos and love them both!
But DD is right, the Otos may not be the best fit for your Cichlid setup...
I would go BN for the cichlid tanks and Otos for the shrimp/guppy one.
Just please make sure your tanks are well established first of these 2 species could easily starve for lack of food. Although the BN eats wafer and such, they also really should have Drfitwood to rasp on.
But DD is right, the Otos may not be the best fit for your Cichlid setup...
I would go BN for the cichlid tanks and Otos for the shrimp/guppy one.
Just please make sure your tanks are well established first of these 2 species could easily starve for lack of food. Although the BN eats wafer and such, they also really should have Drfitwood to rasp on.