Basically, there are 2 kinds of fish feed: sinking & floating.

Let’s compare the pros and cons of these two fish feeds.

Sinking  Feed

Sinking fish feed is highly possible to sink at the bottom of the water. Your fish are very likely to miss it.
Sinking fish food at the bottom will rot finally and lead to bacteria that may cause fish disease.
However, this is not mean sink fish food is a 100% bad choice, it also has some advantages, such as:

Better for fish who likes to live in the bottom level of water.
Great for the sky or pavid fish that are scared to get close to the surface of the water.
Terrific for a fast-moving stream.

The twin screw fish feed extruder makes floating fish feed, it delivers the mixed fish food powder smoothly by a double screw inside, during this process, the fish food can reach more than 100 °C in the screw. When the fish food is extruded through the metal mould, fish feed is suddenly cooled down by meeting the room temperature, the shape will be expanded than original. The expanded fish food has a light weight, the pellet can float on the water.

Many fish experts believe that floating fish feed scores above other forms of feed and there are plenty of reasons why.

Floating Feed

High Nutrition Retention – Floating fish feed remains suspended on the water surface for a long time. The feed loses some of its nutrient value when dissolved in water. Floating fish feed can save around 20% of material loss due to water, mud, and waste. Good quality fish feed floats on the water surface for at least 10 hours.

• Environment-friendly – Floating fish feed is incredibly easy to monitor. Even some of the leftover feed can be picked up and dried. This feed can be used later and also helps to keep the water clean. This is very favorable for fish growth and environmental protection.

• Easy to Store – The water content (8-9%) in floating feed is very low, owing to high temperature and pressure expansion. This is why the feed particles are hard and have high stability. Furthermore, it is incredibly easier to store because of its lesser moisture content.

• Best for a Young Fish Breed- Floating fish feeds are easy to digest because of their loose pellet structure. As a result, it is very helpful if you are dealing with smaller fish.