Feeding for all species
Invertebrates are generally omnivores, with a special preference for vegetable-based foods. In addition to algae, their natural diet also includes animal plankton, detritus (dead vegetable matter, rotting foliage, etc.) and even carrion.
These natural sources of nutrition are usually lacking in an aquarium. A high-quality shrimp feed provides the nutritional foundation here. Different types of frozen feed (midge larvae, artemia), Dennerle Algae Wafers, fresh vegetables (spinach, courgettes), Dennerle Catappa Leaves or herbs (stinging nettles) should be added to the diet on a regular basis as supplements and to provide a touch of variety.
Similar remarks hold for nano-fish. After all, they want a balanced diet.