Abstract
Jade perch (Scortum Barcoo) is a highly nutritious fresh water bass species native in Australia and now being a promising candidate for aquaculture in China. To provide a fundamental biological basis for future germplasm improvement and exploitation of jade perch, biological characteristics of jade perch, including propagation, morphological and genetic characters were analyzed in this study. Jade perch becomes sexually mature at four-year-old. Zygotes of jade perch are transparent, buoyant, and swell upon absorption of water to up to 2.1±0.3mm in diameter. At a water temperature of 27.5±2°C, zygoteshatched 21-26h after fertilization. Comparison of morphological characters between two- and six-month-old jade perch revealed that the proportion of the head with respect to the body decreased significantly (P
Highlights
Jade perch (Scortum barcoo), known as Barcoo grunter, is a fish species belonging to thegenus Scortum, the family Terapontidae and the order Perciformes
A study conducted by the Australian Common wealth Scientific and Industrial Research Organization (CSIRO) in 1998 indicated that among 200 sea food species tested, jade perch contained the highest level of omega-3, which was approximately 3-fold that in Atlantic salmon and silver bass
Bao et al [8] conducted a comparative analysis of the composition of typical nutrients, fatty acids,and amino acids in the muscle and viscera of jade perch, bass, and Chinese perch (Sinipercachuatsi),and Zhao et al [9] assessed the nutritional value of jade perch
Summary
Jade perch (Scortum barcoo), known as Barcoo grunter, is a fish species belonging to thegenus Scortum, the family Terapontidae and the order Perciformes. Fast-growing jade perch, which can be stocked at high densities in recirculating aquaculture systems (RAS) and feeds on grow-out diets with very low levels offishmeal and fish oil, is a promising candidate for aquaculture [2,3]. This species is being farmed in both intensive ponds and recirlulating systems in Australian, and in China, Malaysia, even in Belgium [4,5,6].Since the introduction of jade perch in China, domestic researchers have conducted several studies on the breeding and nutrition of this species. Zhu et al [12] characterized the bacterial community structure associated with filter material in the recirculating aquaculture system of jade perch
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