Structure and distribution of demersal fish in Moo-KhoBulon, Satun province, Thailand

The study found there are various species up to 69 species of fish, 64 species groups  are 2 species of groups, squid, crab, crayfish 3 species, grasshoppers only 1 species. Dominants Species is found on the island of Mo Kho Bulon, Satun Province by number Species is found Sillago sihama  of 1,112 characters (representing 55.54%), followed by Netuma thalassinus 104 characters (equivalent to 5.19%), sand, white sandfish Scolopsis taenioptera  the number 83 (or 4.15%), Upeneus  luzonius of  79 characters (equivalent to 3.95%), respectively. Dominants Species is found on  the island of Mo Kho Bulon, Satun  Province by weight.Species is found on the island of Mo Kho Bulon, Satun  Province by weight  were found that fish with Sillago  sihama total weight of 40,955.70 grams (equivalent to 52.39%), followed by fish spines Netuma  thalassinustotal weight of 6268.60 grams (equivalent. 8.02%), white fish  Scolopsis  taeniopteratotal weight of3707.80grams (equivalent to 4.74%), respectively. Sillago sihama total weight of 40,955.70 grams (equivalent to 52.39%), followed by fish spines  Netuma thalassinus total weight of 6268.60grams (equivalent. 8.02%), Saitama, sand fish, white fish Scolopsis  taenioptera total weight of 3707.80 grams (equivalent to 4.74%), respectively. Standing Crop with an average of 125.07 kg. per hectare. By most in the month of July2012 was 200.05 kg. per hectare. And lowest in May was 45.19 kg. per ha.  The catch per unit effort with nets caught fish (CPUE) from this study at the fishery on average 6 hours showed an effect catch average of 2.61 kg. per hour. The study found that The index species (richness index) of the month of July2012 with a variety of species, most, followed by the June 2012 January 2013 March 2013 and May 2012 respectively. The island of Mo Kho Bulon, Satun Province. Average water quality the salinity of the water was 30 ppt, pH was7.8 and the average DO was 5.9 mg / L  average water depth of 12 meters and an average water temperature of 30 ° C.