I currently have a 500 ltr tank with:

- 1 regal tank, a perc clown, a fire fish, a sand sifting goby, two shrimps, about 8 soft corals and a few crabs. I also have about 80kgs of live rock.

Does anyone know of a site that has a list of all the fish that would be suitable for this set up? I keep on thinking about various fish but then I bottle it because I have doubts about their suitability.

Any thoughts on a spotted boxfish? Could I get another tang in or is this a bad idea?

Any help appreciated.

well i have a similar system and have 2 regals a blonde naso and a kole tang who all get on great although il be rehoming one of the regals soon, id leave the boxfish mate youve to much rockwork to shift if it dies as they can release toxins when they die, tought about a wrasse? i can recommend to silver belly bannana wrasse peacefull and out a fair bit with no special requirements

the kole tang is a really nice fish - had kind of worked on the basis that another tang was not a great idea because they would be aggressive to each other though?

Also, do you know if I buy another clown to go with the one I have got have you any idea what the best way to go about this is?

Anyone got any other suggestions? I really dont know what to get.

I have attached a pic of my tank

kole tangs are normally peaceful as for adding a clown you need to add one much smaller than the one you have that way they wont fight to death as the larger one will become the female with just a few small scuffles lol