puffer fish


A small Japanese puffer fish is the creator of one of the most spectacular animal-made structures. To impress the female puffer fish, the male labors 24 hours a day for a week to create a pattern in the sand. If the female finds his work satisfactory, she allows him to fertilize her eggs. She then lays them in the middle of the circle, leaving the male to guard the eggs alone.

Life Story (2014)


A puffer fish made this for his nice lady friend. A diver in Japan filmed this never before seen hatchery/nest. It measures about 6.5 feet across and consists of a circle with geometric spokes in the shape of ridges, sort of like the spokes on a wheel. 

Underwater cameras showed that the artist was a small puffer fish who, using only his flapping fin, tirelessly worked day and night to carve the circular ridges. The unlikely artist – best known in Japan as a delicacy, albeit a potentially poisonous one – even takes small shells, cracks them, and lines the inner grooves of his sculpture as if decorating his piece. Further observation revealed that this “mysterious circle” was not just there to make the ocean floor look pretty. Attracted by the grooves and ridges, female puffer fish would find their way along the dark seabed to the male puffer fish where they would mate and lay eggs in the center of the circle. In fact, the scientists observed that the more ridges the circle contained, the more likely it was that the female would mate with the male. The little sea shells weren’t just in vain either. The observers believe that they serve as vital nutrients to the eggs as they hatch, and to the newborns.

More pictures and full story at Spoon & Tamago.

Update: Click to see how climate change affects puffer fish.

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can we just take a second to appreciate puffer fish

like its so happy

and so stupid looking that it’s cute


can we just

he just wants to be your friend


someone buy me a puffer fish


Mysterious Underwater Crop Circles Created by Puffer Fish

Using underwater cameras, researchers in Japan found that small puffer fish swim through the day and night to create these vast organic sculptures, that look like crop circles, using the movement of a single fin. The team found the circles serve a variety of crucial ecological functions, the most important of which is to attract mates. Apparently the female fish are attracted to the hills and valleys within the sand and traverse them carefully to discover the male fish where the pair eventually lay eggs at the circle’s center, the grooves later acting as a natural buffer to ocean currents that protect the delicate offspring. Scientists also learned that the more ridges contained within the sculpture resulted in a much greater likelihood of the fish pairing. This video shows a puffer fish in the process of making one of the beautiful designs.

sources 1, 2

I don’t hesitate to state that my puffer is the cutest fish in the world and surely this picture make you think the same. These cute eyes move quickly and catch me, then he comes to say hello to me. Still I started to live with puffer, I didn’t know that fish can love human and I can love this 3 cm little fish so deeply. If you don’t believe that, you had better have one and feel this great experience.

Pufferfish photobombs diver in Hawaii in amazing shot 

A diver off Hawaii’s Kohala coast was upstaged by a photobombing pufferfish.

Regan Mizuguchi was taking a photo as he dived with his GoPro camera when he caught the attention of the scene-stealing sea creature.

"I had placed my GoPro camera on the ocean floor and was experimenting taking images when I noticed the fish bobbing through the water," he told Metro. “It was only after I reviewed the images that I noticed it had completely blocked out my face in one of the shots. I couldn’t believe how perfect it was.”

(via Daily News)

Blowfish Aren’t Actually Holding Their Breath

Contrary to popular belief, blowfish aren’t actually holding their breath when they’re puffed up, according to a new study.

Pufferfish, also known as blowfish, can quickly balloon their bodies to the size of a football by gulping water into their elastic stomachs. And while it turns out they can still breathe during this expanded state, the deflation process may make them easy targets for predators.

“We were intrigued by previous studies that suggested the pufferfishes hold their breath while inflated, presumably to keep the ingested water in the stomach,” lead researcher Georgia McGee told Live Science. “If this was true, we thought it likely that pufferfish inflation would have a limited duration, due to a lack of oxygen getting to vital body organs.”

To test the theory, McGee and her colleagues collected eight black-saddled pufferfish (Canthigaster valentini) from Australia’s Great Barrier Reef and induced their puffing abilities while in a sealed tank. When they ballooned to about four times their normal size, the scientists measured the amount of oxygen in the tank to determine whether the fish were holding their breath.

It turns out they weren’t, and while inflated they’re actually quite good at taking up oxygen through their gills, McGee noted.

Biologists believe that these marine animals developed their “inflatability” to gain a faster and better swimming technique. According to National Geographic, when at normal size, they are typically slow and clumsy and vulnerable to predators.

Ironically, however clever this trick may be, it may also leave them utterly defenseless, creating a no win situation.

When puffed up, the fish’s oxygen uptake increases to five times that of resting levels, therefore it takes about 5.6 hours for them to deflate and return to typical metabolic levels. And while pufferfish come equipped with deadly poison, it may not be enough to ward off predators when they are too tired to fight back.

“It is kind of like a human athletics race,” McGee explained. “Once we have finished the race, we need some time to recover before we can perform to the same level again.”

The findings, published in the journal Biology Letters, change our perception of pufferfish, though watching them turn into giant balls is no less amusing, as the movie “Finding Nemo” shows.