Cove culture of marble goby (Oxyeleotris marmorata Bleeker) and carps in Tri An Reservoir of Vietnam

Results indicated that the cove had relatively good physicochemical conditions with diversified natural food resources such as terrestrial vegetation, phytoplankton, zooplankton, benthos, detritus, small wild fish and prawns. The major food item of marble goby was small freshwater prawns, followed by small wild fish and benthos. Addition of marble goby to carp polyculture in cove gave much higher economic return, compared to that without marble goby (US$2713.2 vs. US$260/crop). This study has demonstrated that cove culture of marble goby is a prominent prospect ecologically, technologically and economically.