id keep him and save my money for a bigger tank.. dovii are awesome fish ...if u keep him alone ull b ok with like a 120 4 by 2 by 2 .....i talked to rapps about this and he told me i would b ok in that tank if he is housed alone , but i got a bigger tank and a female so ....its up to u what u do .. i had jags and dovii ... imo dovii r a cooler fish ..even with the jag u will in time need a bigger tank so take ur time think it out and make ur move .....good luck man