Printed in Great Britain ON THE FUNCTION OF THE WHITE MUSCLES IN TELEOSTS AT INTERMEDIATE SWIMMING SPEEDS

Fish myotomes contain two basic types of muscle fibre, red and white. Where these are separate the red fibres are found as a thin superficial layer below the skin along the mid-lateral aspect of the fish and form a thicker triangle of muscle at the peripheral extremity of the horizontal septum. Macroscopically these muscles are clearly dis