Monkfish fish
The depths of the seas and oceans hold countless mysteries and secrets that scientists around the world strive to uncover. While some are solved through observation and research, others continue to baffle oceanographers. One of these mysteries, which was unraveled relatively recently, is the fierce-looking fish with the amusing name “anglerfish.” This species is a phenomenon of the underwater world, as every individual ever caught turned out to be female. Every single one! Naturally, scientists were intrigued by the question: how does the anglerfish reproduce? Why are only “ladies” found? And where are their “gentlemen”? It was only after extensive deep-sea research that this incredible mystery was finally solved. The answer was as simple as it was astonishing. Intrigued? Well, hold tight, and you’ll soon find out.
But first, let’s take a quick look at this, to put it mildly, not-so-attractive fish. The anglerfish got its name due to its rather terrifying appearance. Just imagine: a disproportionately flattened body, a third of which is taken up by a huge head with a wide mouth full of sharp teeth. Its skin is brownish-green, scaleless, with small eyes, and on its forehead, there’s a growth resembling a horn, but more like a thin fishing rod. This “rod” is how the anglerfish catches its prey, earning it the nickname “angler.” It lives on the ocean floor, hiding among rocks and burrowing into the sand, spending most of its life in ambush. Folds of skin around its mouth, resembling brown algae, help it camouflage. This “charming” fish can remain motionless for hours, waiting for its prey and luring it with its “fishing rod.” The anglerfish doesn’t pounce on its prey; it sucks it in along with the water.
How the Monkfish fish Reproduces
All of this was known to oceanographers for a long time, except for one persistent question: why are all “anglers” female? Where are the males? Since anglerfish spend most of their lives in ambush, how do they mate? The answer turned out to be truly extraordinary. It turns out that these fish have a completely unique reproductive mechanism.
After extensive research, scientists discovered that the “males” are a thousand times smaller than the “females.” While a female can reach up to two meters in length, the males only grow a few centimeters over their entire lives. And here’s the main question: where are they hiding? You’d never guess—they hide inside their female counterparts! Yes, that’s exactly how it works. Once the male reaches sexual maturity, he bites into the female’s skin, and soon the partners fuse together, becoming one. They share a single circulatory system.
How was this discovered? One day, scientists found a tiny fish that was previously considered an independent species. However, research showed that this fish was actually the male anglerfish! Once fused with the female, he coexists peacefully, feeding off her biological resources. After this union, the male’s eyes and fins fall off, and he can no longer function independently of the female. Sounds grotesque, doesn’t it? But that’s nature for you. The “wife” continues to hunt, feeding them both, until the “husband” fertilizes her eggs with his sperm. After this, he detaches from the female and dies, making way for the next partner. “The job is done, now he can go,” as one might jokingly describe the process. Oceanographers call this phenomenon “parasitic mating,” explaining it as a result of the difficulty in finding a mate in the dark depths where anglerfish live. Nature, therefore, devised this unique solution.
