Hey Vincent,
In addition to the Grazers, we have a full line of other foods available. We offer two types of Rift Lake foods, "Red," and "Green." Green is, as you might imagine, a formula more intended for herbivorous fishes, like most mbuna. The red is a more "meaty" diet, with a lot of crustacean in it, for more carnivorous fishes, such as Shellies, Haps, etc.
Both of these foods use sustainable harvested ingredients, and are a slow sinking, soft pellet. They produce less waste, and less stink than some other fish foods.
The big difference, though, is in vitamins, minerals, and especially proteins. Most fish food is made by baking. The ingredients are ground together, turned into a paste, and then the paste is heated to dry it into flakes, pellets, or whatever format is desired. When you cook the food like this, you denature the proteins and damage the vitamins -- they're still there, so both the raw and cooked food will have 84% protein, but the protein type is inferior.
New Era foods use a process called extruding, in which the food is forced through what amounts to a large colander. This separates out the water and the food, creating a fish food that has better proteins and vitamins than "cooked' food. If you want to read a scientific paper on the topic, see :
https://ag.arizona.edu/azaqua/ista/ISTA8/AymenAmaar.doc
This is a study where they examined Tilapia growth in a fish farm using extruded and traditional, cooked foods. They found that they could stock higher densities of fish and had superior growth with extruded food -- in the aquarium, this translates to less waste (lower nitrates), faster growth, and more nutrition going into the fish. This is the reason why insane body builders drink raw eggs rather than cooking them like normal people -- better protein.
And, of course, it's not just Rift Lake foods, but also pellets formulated for Neotropical Cichlids, Tropical Flakes and Pellets, Catfish Pellets, Pleco Pellets, the new Shrimp Food, and the Grazers!
Or, if you really want to give the fish a boost, there's also the Aegis series. Although intended for use in marine environments, the foods can also be fed to freshwater fish, and contain very high doses of vitamins, minerals, and proteins. They greatly improve immune response and overall health of the fish. They are
not to be used as a staple diet (seriously, it's like shooting 12 raw eggs and a vitamin smoothy 6 times a day), but in rotation with other fish foods.
