well ive had that purple one for about a week if not longer and today was my 1st attempt to feed it! It loved it, gobbled it right up! I would cut the silversides or krill up into smaller pieces prob! I need longer tongs so i dont have to get wet! grrr i cat wait to get my 75gal going so i can get it all in one tank! $$$$ lol i need another light, skimmer, heater, return pump....idk lol!