Hi welcome to the forum!
I had all four of my clowns, 2 b&w's and 2 oscellaris in my 55g and it was trouble. The female orange one kept attacking the black ones which I think are wimpy cause they are tank bred clowns. LOL
I had to move out the orange fish to my 29g biocube.
I would recommend a move to another tank if available or maybe returning the orange ones. I think the infighting will just get worse. In my situation the orange one had my black ones hiding on the surface near my mag float, looking like they were gonna die.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.