This fish has been marked with an individualized color code so that its behavior can be recorded during spawning. The hermaphroditic chalk bass, a Caribbean native, switches from female to male and back again, multiple times a day. The natural world offers many curiosities, but hermaphroditism—the presence of both male and female reproductive organs—may be among the most peculiar. Take the chalk bass Serranus tortugarum , for instance. New research published in Behavioral Ecology suggests that the small reef fish, no more than three inches long, may switch sex roles with their partner up to 20 times each day. The fish demonstrated a remarkable commitment to varying their sex roles, explained Mary Hart , an evolutionary ecologist at the University of Florida and the lead author on the study.
Figuring out the sex of a specific fish can be quite difficult if you don't know much about fish anatomy, but it's definitely doable. For more information on your fish, you can consult books, videos, and fish experts.
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