Are you lights on? I sometimes turn them off for the day when I have a reaction like that to new fish. I don't know if that will work for tang hostility though, they can be big time haters.
ya my lights are on allthough they seem to be leaving eachother alone now
i hope i didnt make a mistake by puting two zebrasomas in my tank its a 210 gal so i hope the two fish can work it out and play nice
It'll take time but don't worry, it'll calm down soon. Purple Tangs are known to be a lot more aggressive than other tangs, like the Desjardinii Tang. The purple just needs to show who's boss and eventually they'll calm down. Since the purple's just swatting the desjardinii with its spine, i don't think there's much do worry about. If you find that bits of the desjardinii's fins start to get nipped at or the desjardinii develops ich, then you might want to take him out for a while. For future reference, turning the lights off for a few hours after introducing a fish always helps.
Good luck with the desjardinii and be sure to post pics when he settles in.
ya i think you are right about the purple just sjowing the des who is boss
i notised a few small nips taken out of the des's dorsal fin but the purple is still bullying him around a bit maby ill turn off the lights early tonight to ease the tension
urple Tangs are known to be a lot more aggressive than other tangs, like the Desjardinii Tang