No abstract

Food and feeding habits of common carp (Cyprinus carpio) larvae and juveniles were studied in earthen ponds of Marine Science Centre Fish Farm. Total length and mouth width of fish were measured aid of dissecting microscope, while digestive canal contents and fullness degree were inspected aid of compound microscope. Water temperature was between 22-24°C, whereas salinity was 4 PSU. Results are showed high correlation (0.98) between fish length and mouth width, where mouth width was increased with increasing of fish length. Feeding intensity and activity were 13.98 and 88% respectively, whereas important relative indexes were 3731, 2559, 2263 and 1 for artificial feed, algae, diatoms and copepods respectively. Results appeared that digestive canal of fish less than 25 ml length was undifferentiated straight pipe while in fish more than 25 mm length was curved pipe. Five genere of algae (Chlorella, Oscillatoria Rhizosolina, Spirogyra and Ulothrix) were detected in the alimentary canal of fish.

Fishing was conducted from March, 2001 to August, 2006 in the water surrounding Samalliah Island, Abu Dhabi, UAE and intertidal laggons of this island using different fishing gears. Traps and hooks and lines were used five days a week, cast nets were used once a week, while seine nets and fixed gillnets were used seasonally. A total of 65 fish species belonging to 35 families and to 51 genera were recorded during sampling period. Fish species are classified according to their appearance in the samples to four groups. Very common species comprising 26.1% (17 species), common species comprising 24.6% (16 species), rare species comprising 35.4% (23 species) and very rare species comprising 13.8% (9 species) of total fished species. Sixteen species were captured by hooks and lines, eleven species by garkoors and fourteen species by cast net.