Courting pair of S. pharaonis with the larger male above the female. Male is continually stroking the dorsal body surface of the female while they swim. This is pre-copulatory behavior, but not mating itself. Note the iridescent blue stripe along the area of the fin insertion of the female - a characteristic feature of this species.
Maturity: Adults; Sex: Male, female; Lab or Wild: Lab; Origin: Gulf of thailand, w. pacific