Histological Observation of Digestive System of Claris gariepinus

The digestive system of Claris gariepinus was observed by using the methods of the vivisection, wax section and microscope technology. The results showed that the digestive system of Claris gariepinus were composed of digestive tract including oral-pharyngeal cavity, esophagus, stomach and intestine. Digestive glands were consisted of liver and pancreas.The oral-pharyngeal cavity was relatively big in the front. The jaw teeth was sharp and small. The esophagus was thick and short. Muscular layer was strong and the longitudinal plicamucosa was deep. The stomach was V-shaped and divided to three parts including cardiac stomach, the body of the stomach and pyloric stomach. There were many mucous membrane pleats in the stomach wall. There were no goblet cells. Massive mucous cells were found in the mucosa. Massive gastric glands were distributed in the lamina propria of the stomach. Muscular layers was strong. The intestines were divided into three parts including foregut, midgut and hindgut. The mucous membrane pleats was big. There were a little of goblet cells. Massive intestine glands were found in the mucosa. Muscular layer were less strong than that in the stomach. There were more goblet cells and less intestine glands in the mid-gut and hindgut. There were obvious hepatic cords in the liver. The hepatic lobules were not clear. The pancreas was distributed diffusively with exocrine glands and pancreatic islets.