I got my first silver yesterday, he's 4.5 - 5 inches. the first time he ate was this morning and he ate frozen scallops. For dinner tonight he devoured frozen shrimp. I offered pellets at both feedings, he took one each time and promptly spit them out. Still a work in process LOL. Anywho, back to your question...unless you're going to quarantine (and possibly start breeding) your feeders, I wouldn't take the risk. Feeders are notorious for spending their lives in sub-standard conditions. I wouldn't risk my aro's health on LFS feeders. I'd supplement with human grade frozen seafood if you've already got him eating pellets.