Weird Nature 10 Bizarre Facts About Fish Penises And Sex Rituals  

Crystal Brackett
25.8k views 10 items

Do fish have penises? Just in case you were wondering, fish penises do exist. In fact, fish have no shame in their game. They match their strange and unique genitalia with equally weird fish sex rituals. 

How do fish have sex, and where do fish babies come from? Unsurprisingly, fish aren't the only creatures with odd sexual behavior and genitalia. But how different are fish from humans, and how exactly do they populate the ocean full of so many colorful and diverse types of fish? Believe it or not, some fish penises are sort of like human penises - they're long appendages that stick out from underneath them. Others have internal organs that act like penises, but don't resemble other animal penises at all. Each species of fish have unique sets of genitals - including one whose penis is on their head. 

So if you're interested in learning about how fish get down, look no further. 

Some Fish Have Both Sex Organs And Can Change Genders

Some Fish Have Both Sex Organs... is listed (or ranked) 1 on the list 10 Bizarre Facts About Fish Penises And Sex Rituals
Photo:  Imgur

Although all clownfish are born male, when the alpha-female of a school of clownfish dies, a male will need to take her place. All clownfish are born as sequential hermaphrodites, meaning they possess both sets of sex organs but displays one gender at a time. Meaning fish are born male but can later switch to female.

This is usually done by the dominant male, who then switches his role from main male breeder to main female breeder. However, clownfish aren't the only aquatic-dwellers that switch up their sex organs. The Indo-Pacific cleaner wrasse are known to make the switch from female to male if the alpha male is removed from their mating harem. 

Bigger Penis, Bigger Brains

Bigger Penis, Bigger Brains is listed (or ranked) 2 on the list 10 Bizarre Facts About Fish Penises And Sex Rituals
Photo:  Pinterest

Scientists have discovered fish with bigger penises breed fish with bigger brains. Male mosquitofish with big penises are better at getting their female counterparts to mate with them as opposed to the male fish that are less endowed. Scientists studies how penis length might factor into this and their research uncovered the female offspring of the big-penis fish had brain sizes that were an average of 4.6 percent to 6.5 percent larger than the offspring of male fish with smaller penises. Although the difference was significantly larger for the female offspring, there was no change in brain size for the male fish.

Many Fish Mate Just By Shooting Everything Into The Water

Many Fish Mate Just By Shootin... is listed (or ranked) 3 on the list 10 Bizarre Facts About Fish Penises And Sex Rituals
Photo:  navidbaraty/Imgur

Many fish will reproduce with each other just by shooting all their reproductive fluids into the water in hopes they'll get fertilized. It's called broadcast spawning and by doing this, they're "broadcasting" their genetic code all over the ocean. Female and male fish will release their eggs and sperm into the water, and just let nature take care of the rest. However, the eggs need to be continuously suspended in the water by a current. If a current isn't present during fertilization, the eggs will sink to the bottom and die.

There's A Fish With Genitals On Its Head

There's A Fish With Genita... is listed (or ranked) 4 on the list 10 Bizarre Facts About Fish Penises And Sex Rituals
Photo:  Pinterest

Discovered in the waters of Vietnam's Mekong Delta, the phallostethus cuulong is a fish that literally has a penis on its head. While most animals have genitals located near their tail region, this fish lets it all hang out by keeping its junk right under its throat. The location of the fish's penis lets it grab females with its mouth during mating.