Uaru fernandezyepezi are generally very peaceful with other peaceful fish of a similar size. they will however wreck plants so can't be housed in a planted tank. Due to the soft acidic water and high temp required by these fish any tank mates need to be carefully chosen. Uaru fernandezyepezi can be kept in a group although they will probably become more aggressive when breeding. They can be delicate if not kept in the right conditions and they are prone to hole in the head disease in less than perfect conditions.