... used in smallholder fish farming 15 2.4 Current status and constraints of feed and feeding for inland aquaculture in Vietnam 17 2.5 Amino acid requirements in fish 18 2.5.1 Qualitative amino ... finfish to date have shown that they need the same ten EAA as most other animals: arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine ... stage of fish than in the later stages. 11 1 Introduction Worldwide, aquaculture is developing, expanding, and intensifying. In Southeast Asia, aquaculture output has been increasing rapidly,...