That endli should grow pretty fast and get pretty big. Feeding depends on maintenance and filtration. If you want to feed them everyday then you'd need more filtration and water changes than feeding them 2-4 times a week. Since they are young I would say if you have the time and resources feed them twice a day to fatten them up and get them a little bigger. Once they are both above 4-6" then start slowing down to 1 time a day. Then once you think they are ready or you're just tired of the maintenance you can feed them 4-5 times a week. I would feed bloodworms, brineshrimp, blackworms (i've heard they're pretty good), shrimp pellets, and cut up massivore. When they get bigger you can feed tilapia, silversides, catfish, krill, whole pellets, and earthworms. Theres a lot of things to feed your bichirs but try to vary their diet as it is better for their health and helps them grow bigger.
