Five day old Helostoma temmincki larvae measing 4.6 ± 0.1 mm in total length were stocked into 12 larval culture tanks at the rate of 1000 larvae/tank (10 larvae/I). The larvae were fed Diet I (Egg yolk), Diet II (Egg yolk 4- Artemia nauplii), Diet III (Egg yolk + microworms), and Diet IV (Egg yolk + Moina,) for a period o f 4 weeks. After 1 week of rearing, larvae fed Diet III measuring 8.4 mm total length and 7.0 mg weight were larger than larvae fed the other diets (P 0.05). At the end of two weeks, larvae fed Diets II, III and IV were larger than larvae fed Diet I (P < 0.05). From week 3 onwards, larvae fed Diet IV were consistently larger (P <0.05). This experiment shows that microworms were very suitable as a starter feed and that Moina was suitable for feeding Helostoma temmincki larvae after week 2 under tropical conditions.