Figure 2. Morphometric analysis of fish eyespots.

(a) Relationship between whole eyespot size and ring width/core diameter in the D1 eyespots of the spotted mandarin fish (n = 14). (b) Relationship between whole eyespot size and ring width/core diameter in the D2 eyespots of the spotted mandarin fish (n = 14). (c) Relationship between whole eyespot size and ring width/core diameter in a single spotted ray (n = 20). Note that there are four arrays of eyespots parallel to the body outline. Five representative eyespots were taken from each array for measurements. (d) Focal (focus-to-focus) distances and gap (edge-to-edge) distances of dorsal eyespots (n = 11). Measured widths, labelled by uppercase and lowercase alphabets, are shown on the right.