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(a–d) Fluorescent and white light pigmentation pattern of a female chain catshark (Scyliorhinus retifer, 32.2 cm; and (e–h) of a male S. retifer (26.4 cm). Males have pelvic claspers that fluoresce, whereas the females lack claspers, and the reticulated pigmentation pattern is more pronounced in females (thicker dark black/brown lines), particularly ventrally, under both fluorescent and white lighting.
