of all the factors affecting shelf-life, most interest has focused on the possible difference in iced shelf-life between fish caught in warm, tropical waters and fish caught in cold, temperate waters. Some tropical fish can be kept 20-30 days when stored in ice( huss 1995).This can be attributed to differences in the bacterial growth rates, with a 1-2 week slow growth phase ( or period of adaptation to chilled temperatures) in tropical fish stored in ice. This is far longer than for most temperate species, and several studies have been conducted assessing the shelf-life of tropical species. Several authors have concluded that fish taken from warm waters keep better than fish from temperate waters whereas lima dos santos( 1981) concluded that also sosered me temperate water fish species keep extremely well and that the longer shelnf lives in general are found in fresh water fish species compared to marine species. However, he also noted that the shelf-life of more than 3 weeks, which is often observed for fish caught in tropical waters, never occurs when fish from temperate waters are stored in ice. The iced shelf-life of marine fish from temperate waters varies from 2 to 21 days which does not differ significantly from the shelf-life of temperate freshwater fish ranging from 9 to 20 days. Trái ngược với điều này, cá đánh bắt ở vùng biển nhiệt đới cho 12-35 ngày khi được lưu trữ trong băng và nhiệt đới cá nước ngọt từ 6 đến 40 ngày. Mặc dù rất nhiều biến thể xảy ra, loài cá nhiệt đới thường có kéo dài thềm cuộc sống khi được lưu trữ trong băng. Khi so sánh được thực hiện, các dữ liệu trên béo cá như cá trích và cá thu sẽ có thể được bỏ qua vì hư hỏng là chủ yếu là do quá trình oxy hóa (Huss năm 1995).
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