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The giant mudskipper Periophthalmodon schlosseri (Pallas, 1770) is a commercial fish and distributes in estuaries and coastline in Mekong Delta, but until now there is only a study on the growth pattern and condition factor variation of this species in Vietnam. This study was conducted in the coastline at Tran De, Soc Trang from January 2018 to December 2018 with 486 individuals were analysed to provide data on gastrointestinal morphology, food and feeding habits of this species. This species is a carnivorous fish due to RLG = 0.697 ± 0.008 SE and feeds mainly on carbs (Uca sp., 76.06%). Besides crabs, small fish (17.63%), shrimps (3.85%), detritus (1.85%) and mollusca (0.61%) are also found in fish stomach. Moreover, we found that 4 individuals that eat ants. The food composition of P. schlosseri does not vary with genders but by season. There is not different in the fullness index (FI) between genders. The FI of the immature fish is higher than that of the mature one and in the rainy season is higher than that in the dry season. The Clark index of giant mudskipper does not be significantly different between genders and seasons. The results offer scientific data on the nutritional characteristics of this species, which is the basis for research on aquaculture and sustainable exploitation of this goby.

tạp chí khoa học đại học quốc gia hà nội: khoa học tự nhiên và công nghệ (vnu journal of science:natural sciences and technology)

Digestive Tract Morphology, Food composition and Feeding Habits of the Giant Mudskipper Periophthalmodon schlosseri (Pallas, 1770) from the Coastline in Tran De, Soc Trang