Figure 1: Morphology of grass carp intestine. A: Lateral view of grass carp (Bar=0.67 cm). B: Ventral view of grass carp showing the gastrointestinal tract in the abdominal cavity. Notice the coiling of the intestine (I), which is located ventral to the air bladder (AB). The upper part of tract was overlapped by the liver (L). (Bar=0.81 cm). C: Photograph of the gastrointestinal tract of grass carp. Oesophagus (O) connected to the intestinal bulb (IB). The intestine is divided into anterior intestine (AI), posterior intestine (PI) and rectum (R). (Bar=0.80 cm).