The green mandarin is the fish that got me into SW
aquaria. I waited 3 years before buying my first one. And it was from an established coral display tank my LFS
had-he had the fish for about a year and it has yet to look at frozen foods. I wouldn't recommend a tank under 75 gallons, and I even let mine mature for a year with frequent additions of copepods.
Even if you can find a mandarin that eats frozen food, I can't imagine that a fish that eats 24/7 would be satisfied with periodical feedings of mysis or brine shrimp.
And as for the specie(s) topic. I can't recommend more than 1 mandarin/75 gallons with a generous amount of live rock; I'd even go as far as saying 1 mandarin/75 lbs of LR
. These guys really eat non-stop.
I have my mandarin in a tank with 4 tangs: a powder blue, lieutenant, naso, and an orangeshoulder, a surplus of crabs, and a fire shrimp.
Favorite fish, hands down.