Water Spinach Leaves (Ipomoea aquatica Forsk) is one of the alternative ingredients that can substitute soy flour in in feed which has a high protein content of 23.99%. This study aims to obtain the best percentage of the use of fermented water spinach leaf meal in feed to produce feed efficiency and growth of catfish seeds (Pangasianodon hypophthalmus). The method used in this study was a one …