depends on the tanksize really. there shouldn't be a problem as long as they have room. I have 2 bolivian rams in a 60 planted tank along with many species of rainbows, rasbora's, cories, a pair of pearl gourami's, panchax and congo tetras as well as some bristlenose pleco's and oto's for cleanup. the only fish the rams bother or are bothered by are eachother. Neither one likes the other and they stay at opposite ends for the most part. Kyle