I just got a festae cichlid, a severum, and 2 green terrors, the pet store said they could all go in a tank together, but theyre beating eachother up, i know which one is acting up its just one of the green terrors. i dont know what to do, theyre in a 10 gallon tank right now, i know thats way too small but im getting them a bigger tank in a couple days. what should i do for the time being? thanks