Great news!!! Spartacus likes and went directly for feeder guppies.. I'm so freaking glad I saw him eat something! I did put in a pinhead cricket and it danced all over the surface but Spartacus didn't go after it. So then I put 3 feeder guppies one swam past he struck at it missed and then swam after it struck a second time and engulfed it whole without an issue! I figured he was done for a day or two but he seems active in searching for another one. They are staying well below him at the bottom for now lol guppies are smart?!?! Thanks for all the advice on how and what to try feeding my new baby aro!