Hi Steve,
I'm in the process of ordering a new tank/sump to consolidate two tanks (one 2 years and one 18 months old). They both have a mandarin in them, both are doing well, eating frozen foods, pellets and copepods from the fuges I have running. My new tank is going to be a 240 (8x2x2) with a 180g sump (~70% is aside as the fuge).
I'm somewhat concerned that since both tanks have overlaps I may have issues: Overlaps:
2 mandarins may both be males (both eat pellets) males have a spiked dorsal fin, females, a rounded dorsal fin. Two males will not work. Ever.
Front pair of occ clowns and the back tank has a pair of percula clowns. The front pair is larger than the back pair by about 30%. It depends. Fortunately you are talking about the least aggressive species and also, they only range close to their home anemone rather than far afield. So it could work if they have a home anemone.
2 starry blennies probably will not work
Other inhabitants include: Flame angel, flame hawk, Naso blond tang, blue yellowbelly, diamond goby, orange spot goby, leopard wrasse, yellow wrasse, 3 pj cardinals, 1 Bengali cardinal, 4 pom pom crabs, 6 skunk shrimps. (all fish have been with me at least 12 months)