U can try feeding them baby gold fish, live crikets or centipedeif u want. My indo super red baby eats almost anything i guez she not a fussy eater. Top quality fishes hav 5 levels or more n u count by counting the mature scales on their body from bottom up in a straight line,scales mus apear in line n fully developed without any flaws,shining, good colour thats not pale, no deformeties on skin, tails or fins, no missing beard, the fish should also b alert n not skiddish.My fren who has a 30k indo super red arowana told me how he chose his fish n wat r the charecteristic that u must find for when looking 2 buy an expensive aro or not u'll get a low quality fish.