most any old benthic or pelagic zooplanton is fine. You won't find them at the garden centre tho. DO NOT FEED WORMS FROM THE GARDEN CENTER!!!! tHE WORMS REFFERED TO ARE FROM A PET STORE. You must be UK, here we have blood or red worms and black worms sold in local pet shops (or Local Fish Store) which maybe fed even to marine fish & inverts. To do this get a shot glass or jigger (yes please be sure it is glass & no metal nothing that will contaminate tank) and put a pinch of the red/blood worms rinsed in cool fresh water in the shot glass then sink slowly to the botom while you keep the worms in the shot glass. Live brine shrim esp if you get a brine shrimp net, net a few, soak in Selcon (here is brand name, don't know there) then release in front & on top of mandarin. A dozen several times a day & the worms in a spot that he habituates could possibly pull him thru. If you have a quarentine area you could put him in there with circulation and keep putting in a few red worms, mosquito larvae, even baby guppies and brine shrimp. If he is alone you will know if he is eating & what & he will not be outcompeted for food.plazalisa said:im going to the garden centre tomorrow to get somw live food. is there any certain type i should get that manderins have or is it any old live food?