The glare back from the fish made the pictures unusable. Spanish mackerel are medium sized pelagic fish. They have brass-colored spots that are not visible in the glare. They only time the spots show up is in a picture where the strobe didn't fire. The characteristic drop in the lateral line is more visible even with the glare.
Amberjack are big pelagic fish.
For some reason, the glare was less pronounced with the amberjack, even if the pictures were more blurred from their speed. The amberjack were also a lot more jumpy. Every time the strobe went off, the amberjack school jumped away from me about 5 feet. They would eventually return to streaming by closely in front of me. Then the strobe would go off and they would jump away again.