'Exotic Tropical Fishes' - axelrod, vorderwinkler, emmens, sculthorpe & pronek suggest that the Labeo Bicolor - Red tailed shark be fed All kinds of live foods, besides some vegetable matter in addition, like lettuce or spinach leaves.
Other books say same and some suggest that they will get the algae as well. They sound delightfully playful fish. How are they going??