Tang Question (Advice)

[Billy]

I bought a 300 gallon used aquarium that already had a regal blue tang (Dory) , a bristletooth tomini tang, and 3 yellow tangs. They all get along fine.

The tank has been in its new location a week. Is it already too late to add say a Sailfin tang? Have the territories already been defined by the other tangs?

The tank has 21 fish in it.

1 blue tang
1 bristletooth tomini tang
3 yellow tangs
4 clownfish
5 pajama cardinals
2 banggai cardinals
1 bluegreen chromis
1 lyretail hogfish
1 bluejaw trigger
1 wrasse
1 psycadelic mandarin goby

 

[Andrew6000]

If you have enough rock work that they're not constantly in view of each other they'll probably be okay. They'll definitely have a little tail swatting at the beginning, but they should get used to each other within a few days. I'd feed extra nori during that time just to reassure them there's plenty of food to go around.

 

[Spar]

you are likely to see some violence initially when adding the sailfin. IME though it only lasts a day or two when you provide plenty of space, which a 300g tank is going to provide for you. it is a risk no matter what.

FWIW, I took a chance at adding 5 yellow tangs and 1 purple tang all together at once into my 450g that already had 2 yellow tangs, powder blue tang and a vampire tang; i was hoping by adding 6 new tang's at once that the fighting would be dispersed enough that no one fish would get hit too brutal while everyone 'figures things out'. I was however wrong..... it was a major blood bath that ALL the new fish got ripped up bad from. after two days the violence stopped, and I credit the amount of space as to why noone died. everyone schools together now!