Hello Merc and welcome to TR. My lion is sustained on marine minnows and ghost shrimp as he will eat nothing but live foods. I always make sure that the feeder foods are well fed before placing them in my
DT for the lion. That way I know that he has the best possible nutrician available. I am not familiar with the angler species but am well versed in live feeder foods. I hope that this helps. Hopefully there are others here with knowledge on the care of anglers and can chime in with any other information that could be valuable to you.