Figure 2From: Life history traits of the Chinese minnow Rhynchocypris oxycephalus in the upper branch of Yangtze River, China The appearance of a cross section of a 4-year-old R. oxycephalus lapillus under transmitted light. N, nucleus; TB, translucent band; OB, opaque band. Solid circles show annuli, and the longest arrow shows the direction of measurement.Back to article page