Feeding Biology of Bronze featherback (Notopterus notopterus) distributed in Tra O lagoon, Binh Dinh province
Abstract
This study was conducted to determine the feeding biology of Bronze featherback ( Notopterus notopterus ) distributed in Tra O lagoon, Binh Dinh province. Fish samples were monthly collected to analyze anatomical morphology of digestive system, the relative length of the gut (RLG) and natural food of fish. The morphological characteristics of the fish's digestive system (small sharp - pointed teeth, sharp teeth on the tongue, big stomach, short intestines) and the relative length of the gut (from 0.3 to 0.36) indicate that this fish is a carnivorous species. The natural food composition of fish included crustaceans, larvae of insects, aquatic plant roots and humus , of which the occurrence frequency of food which are animals was very high (95.8%). Thus, it can be said that Bronze featherback is an omnivore but focusing on animals.