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Black soldier fly (Hermetia illucens, BSF) is a saprovorous insect native to South America. It has the characteristics of wide diet range, rapid growth, strong reproduction ability. Due to its rich pro tein content and balanced amino acid composition, BSF is considered as a source of new aquatic feed protein sources with great potential. It has been showed that as a source of feed ingredient, BSF products can partially or even completely replace fish meal or soybean meal in aquatic animal feed, and has a good application prospect in aquaculture industry. Currently, BSF is mainly added to the aquatic feed in the form of three protein raw materials: full-fat BSF larvae meal, defatted BSF larvae meal and pre-pupa meal. Due to the different nutritional characteristics, different BSF feed products and appropriate addition level should be selected for different breeding objects to obtain the best breeding results. This paper reviewed the biological characteristics, nutritional value, factors affecting its production and the latest progress in the application of different product types of BSF protein raw material in aquatic feed, and prospected the application prospect of BSF products as protein raw materials in aquatic feed, aiming to provide reference for its industrial application. [ABSTRACT FROM AUTHOR]

Seaweed is rich in resources, natural, non-toxic side effects, no residue and other characteristics, contains a variety of nutrients and bioactive substances, can improve the nutritional composition of feed, has antibacterial, antiviral, antioxidant, bonding feed and other functions, is a new source of aquatic feed raw materials and feed additives. In the paper, the nutritional composition and biological functions of seaweed powder are reviewed, and the effects of seaweed powder on promoting the growth of aquatic animals, regulating intestinal microbial composition, improving immunity, improving body color and relieving stress reaction are expounded, the application of algae powder in aquatic animal feed is prospected, to provide reference for the further application of seaweed resources in aquatic feed. [ABSTRACT FROM AUTHOR]

Fish meal is the main protein ingredient in commercial feed, which is also a more expensive feed ingredient. In recent years, the price of fish meal remains high, so it is very important to find low-cost and abundant vegetable protein raw materials to replace fish meal. Plant protein is an ideal substitute for fish meal in aquatic feed because of its wide source and low price. The paper reviews the sources of plant protein ingredients, the research progress of plant protein ingredients replacing fish meal, the measures to improve the utilization of plant protein ingredients, to provide reference for the efficient utilization of plant protein ingredients in aquatic feed. [ABSTRACT FROM AUTHOR]