IMO, SW fish need SW foods. If your pellets were for African cichlids, they are probably veggie based; Volitans are carnivores. (not that some concessional greens will hurt) Also, I think the main ingredient in NLS SW pellets is krill; which have been linked to lockjaw in lions. Volitans can be trained to eat pieces of SW fish, shrimp, scallop, etc., from the grocery store. Very inexpensive staple foods. They need vitamins, like Selcon, too.