There are a variety of methods that can be used to produce homemade fish feed. One way is to grind up different types of dry pet food and mix them with water. Another method is to use boiled vegetables or fruits as a base for the feed. Some people also add vitamin supplements, such as brewers yeast, to the feed mixture. The mixture can then be poured into a feeding dish or funnel, which will allow the fish to eat from the surface of the water. Floating fish feed extruder machine is a commonly used equipment and technology in the floating fish feed processing industry.