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Show moreThe 300-gallon (1131-liter) aquarium that held nine adult Herichthys minckleyi. One small male was observed performing alternative male mating behavior "sneaking" -- attempting to fertilize the eggs of a female in the process of mating with a large male.
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Show moreThe small "sneaking" male Herichthys minckleyi was the only fish in the aquarium that exhibited a swollen genital papilla, except the spawning female and the large dominant male.
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Show moreA close-up view of the brood site while a small male Herichthys minckleyi performs alternative male mating behavior. The small male arrives at the site just after the female lays a row of eggs, and before the large male has had a chance to fertilize them.
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Show moreA small male Herichhys minckleyi observed earlier performing "sneaking" alternative male mating behavior is here seen performing \"satellite\" male behavior: driving away additional males that might also try to sneak in to fertilize eggs of the female that is trying to mate with the large, dominant male.
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