I bought one of these fish today ,not realizing that it is semi aggressive ,and also to use caution with fire fish .I have a 40 gallon breeder with 2 clowns ,1 yellow clown goby and a purple fire fish,does anybody have this fish and a firefish and are they getting along.Also i would like to get 2 more fish for my tank ,would that be to many fish for a 40g b.