My tank "was" overrun with pods & live mysis but the mated pair of mandarins ate most of those in my 33g pretty quick. Now they seem to eat the frzn cyclopeeze when I squirt that in the tank & I keep several shrimp that spawn every week so the tank has a fresh supply of live food all the time. I also have a 5g brine shrimp tank that I use for defrost water for my fish.
My old mandarin ate mysis (especially Hikari because they're smaller) before it was too stupid to move away from a large rhodactis mushroom that closed up over the little bugger & suffocated it
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Anthony