Reasonable feeding method for fish feed

It is recommended that fish farmers base their feed selection on the break-even point of fish farming. When the price per pound of fish is below or equal to the cost of producing that fish, low-grade feed is more economical. However, if the market price of fish exceeds the cost of feed, it's better to use high-grade feed, as it can lead to better growth rates and overall profitability. The higher the feed grade, the more efficient it tends to be in terms of both growth and cost-effectiveness.

2. Selecting the Appropriate Feed Particle Size

The size of the feed particles should generally be between 1/4 to 2/3 of the length of the fish’s mouth opening. This ensures that the fish can easily consume the feed without waste. The specific particle size also depends on the species. For example, grass carp, which have larger mouths, can handle feed that is around 1/2 to 2/3 of their mouth length, while smaller-mouthed species like whitefish or squid prefer smaller particle sizes, around 1/4 to 1/3 of their mouth opening. The aspect ratio of the feed (length to width) typically ranges from 1.5:1 to 2.5:1, depending on the species. Before purchasing feed, it's essential to measure the fish size and choose a suitable feed size to ensure optimal feeding efficiency and minimize waste.

3. Feeding Methods and Techniques

(1) The importance of taming fish cannot be overstated. Most fish need to be acclimated to feeding at the surface before they can be fed regularly. Taming usually takes between 3 to 10 days, and in most cases, it can be completed within two weeks. Many fish farmers skip this step due to impatience or lack of knowledge, leading to poor feeding habits and reduced productivity. Tamed fish are easier to monitor, allowing for better control over feeding amounts, feed type, and feeding frequency. This helps in tracking growth, adjusting feeding strategies based on market conditions, and ultimately maximizing profits.

(2) Paying attention to feeding methods is crucial. There are various feeding techniques, including feeding speed, location, timing, and the use of automated feeders. These methods should be adjusted according to the specific needs of the fish species and farming system. For instance, in polyculture systems where different fish species coexist, such as grass carp, silver carp, and tilapia, each has unique feeding behaviors. If not properly managed, some species may not get enough food. Fish farmers should constantly evaluate their feeding practices and make necessary adjustments to improve overall productivity and resource utilization.