I seem to be having a problem with the green chromis in my tank! When I first got them I had four in my tank, then my purple lobster got two of them. So between the pair one picked on the other one till it died and turned into lobster food. Since then I have re homed the lobster and decided to get a royal grama. Well at first the two got fussy about a rock space which I thought was normal, then the net day the grama was missing some tail fin and as the next few days went by he lost more and more.... and now I have not seen him in two day and I feel he is gone. Advice? should I get rid of Hannibal?( yes that is the fishes nickname) Or should I get more chromis to live in a school?
40 Gal breeder 1 chromis 2 O clowns, 1 royal jester goby