A Scanning Electron Microscopical Observation of the Gill of Schizothorax (Schizothorax) prenanti (Tchang)

The surface structure of the gill of Schizothorax (Schizothorax) prenanti was studied by using scanning electron microscope. The results indicate that there are microridges on the the surfaces of gill arch, gill filament and gill lamella of Schizothorax (Schizothorax) prenanti. The characteristics of microridges vary according to their position distributed in the gill and show great differences compared with those of other fish. The surface stucture of the gill lamella is closely related to its respiratory function.