I already have the tangs in the tank so it’s not an option to add the tangs after l. Do you think the CBB will get bullied in the tank?
This isn’t a think question… It’s known that the CBB will be bullied. I would hold off on the CBB until you have these things;
1. A tank that has plenty of microfauna, I prefer younger tanks as they have the algae & Aiptasia for CBBs to feed from. Yes I said algae - I know they don’t eat algae but they do eat the pods and pods feed from the algae.
2. Those three tangs rehomed. They just won’t work long term and no matter how well they get along now, they will likely just fight to the death anyway in that tank size. A 3’ tank is barely enough room for just one of those tangs let alone all 3. (It had to be said. We are ALL thinking it).
3. A 4’ tank at the bare minimum. The Butterflies aren’t small fish, they may be slow growing however they’re active once settled and love to have caves as well as open areas to dive all through. Also, CBB’s are mostly known as getting to be 4” fish however I have seen 2-3 rare occasions where these fish have gotten to 6” - in the wild their max size is most commonly at that 5-6 inch mark from what I’ve seen.
I don’t mean for this to sound stern in any way and instead I mean for this to seem like guidance to a thriving reef and good life for all of your fish. A 3’ tank is in all honesty still a small tank that although it seems like so many options are available it’s still restricting to smaller fish (Gobies, certain wrasses, ect). A 4’ tank is where you really unlock options so I recommend waiting until then, that way you can also gain more experience and properly house a CBB.
Here’s my 4’ tank for example, I have had this tank and most of my fish (including the CBB) for 3 years at this point.