myomeres, between the last gill slit and the anus). Silver lampreys possess a cartilaginous skeleton, and adults generally grow to a length of 12 inches and are silvery or bluish in color when spawning. Prior to spawning adults are often a dull brown or tan color.
Myomeres are found between the last gill slit and the anus (Silver lampreys have a cartilaginous skeleton, with adult sizes reaching 12 inches in length. During spawning, they exhibit silvery or bluish hues. Before spawning, adults commonly appear dull brown or tan.)