A Study on Some Biological Aspects of Giant Snakehead Fish (Channa micropeltes) in Huai Suea Ten Wetland Site in Thailand
Kampon Thaiso
Department of Fisheries, Faculty of Agriculture, Khon Kaen University, Mueang, Khon Kaen, 40002, Thailand.
Bundit Yuangsoi
Department of Fisheries, Faculty of Agriculture, Khon Kaen University, Mueang, Khon Kaen, 40002, Thailand.
Sutee Wongmaneeprateep
Department of Fisheries, Faculty of Agriculture, Khon Kaen University, Mueang, Khon Kaen, 40002, Thailand.
Pornthep Niamphithak
Department of Fisheries, Faculty of Agriculture, Khon Kaen University, Mueang, Khon Kaen, 40002, Thailand.
Pattama Wiriyapattanasub
Department of Fisheries, Faculty of Agriculture, Khon Kaen University, Mueang, Khon Kaen, 40002, Thailand.
Siriporn Tola
Laboratory of Fish Nutrition, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Japan.
Siripavee Charoenwattanasak *
Department of Fisheries, Faculty of Agriculture, Khon Kaen University, Mueang, Khon Kaen, 40002, Thailand.
*Author to whom correspondence should be addressed.
Abstract
This research was aimed to study on biological aspects of giant snakehead fish (Channa micropeltes) in Huai Suea Ten wetland site, Nam Phong District, Khon Kaen Province in Thailand between April, 2017 and March, 2018. Thirty-six fish species belonging to 17 families were observed at 10 sampling sites. Three Channidae fishes, namely snakehead fish (Channa striata), giant snakehead fish (Channa micropeltes), and forest snakehead fish (Channa lucius), belonging to the family Channidae were reported. A total of 230 giant snakehead fish were found in this survey which consisted of 118 males and 112 females. The sex ratio (male: female) was 1:0.95. The gonadosomatic index value of the female (0.79±0.05%) was higher than that of the male (0.25±0.08%). The body length and body weight of a total of 230 giant snakehead fish observed in this study showed the average of a total body length was 43.71±11.72 cm; and the average of the body weight was 448±173 g/fish. The condition factor of giant snakehead fish observed in 12 months were in a range of 0.45-0.74 for the male and 0.39-0.70 for the female. The ratio of the body and intestinal length of giant snakehead fish was as 1: 0.70. The stomach digesta components, expressed as the percentages of a whole stomach content weight of this fish species consisted of 51.8% of fish fillet, 30.3% of small fish and 17.9% of digested digesta.
Keywords: Snakehead fish, body length, body weight, fish species.