It looks AI-generated, but it's real: the red-lipped batfish of the Galápagos

The images started spreading with the same comment over and over: "this is AI". A flat-bodied fish with a grumpy face and lips so intensely red they look painted on. No filters, no editing: this is the red-lipped batfish (Ogcocephalus darwini), a very real resident of the waters around the Galápagos Islands and the coast of Peru.

At a time when anyone can generate a fake photo in seconds, this animal has become a curious symbol: nature can still be stranger than any algorithm.

A fish that would rather walk

The first surprise is how it moves. Although it can swim, the red-lipped batfish spends much of its life resting on the seafloor. Its pectoral and pelvic fins are modified to work almost like legs, and it uses them to "walk" slowly across sand and rock, usually at depths of 3 to 75 meters, though it has been recorded deeper.

That way of getting around is poor for escaping predators but perfect for a patient ambush hunter. It belongs to the anglerfish order, related to monkfish and the deep-sea fish with a built-in "fishing rod".

Its own fishing rod

On top of its head sits a small structure called an illicium, a modified spine with a fleshy tip (the esca). The fish wiggles it to lure small shrimp, crabs, worms and fish, which come closer thinking they've found food. Once the prey is close enough, the batfish sucks it in with a quick movement. Scientists think the esca may release chemicals that help attract prey, though there is still a lot to learn.

Why are its lips so red?

That's the big question, and surprisingly there's still no definitive answer. The two most widely accepted hypotheses are:

• Recognition and courtship: the color may help members of the species identify each other during the breeding season, much as plumage does for many birds.
• A signal at shallow depths: as you go deeper in the sea, red is the first color to disappear because water absorbs it. At the depths where the batfish lives, that red may look different depending on the light, which fuels the debate about what it's for.

What scientists rule out is camouflage: the rest of its body, rough-textured and brownish-gray, does that job.

Named in honor of Darwin

Its scientific name, Ogcocephalus darwini, honors Charles Darwin, whose 1835 visit to the Galápagos was key to developing the theory of evolution by natural selection. The archipelago is famous for unique species: giant tortoises, marine iguanas that dive into the sea, flightless cormorants and finches with beaks adapted to different foods. The red-lipped batfish is one more example of that evolutionary strangeness.

Is it endangered?

The International Union for Conservation of Nature (IUCN) currently lists it as "least concern", and it isn't targeted by commercial fishing. Even so, its habitat depends on the health of Galápagos marine ecosystems, which face pressures such as climate change, El Niño events that warm the water and illegal fishing around the marine reserve. The Galápagos are a UNESCO World Heritage Site, and the marine reserve is one of the largest in the world.

How to tell whether an animal photo is real or AI

The batfish shows that being skeptical about images is healthy, but it's worth checking before dismissing something as fake. A few simple tips:

• Look up the scientific name: if the animal exists, there will be records from museums, universities or databases like FishBase and iNaturalist.
• Run a reverse image search with Google Lens or TinEye to see where the picture first appeared.
• Look at the details: generated images often get repeated textures, shadows and edges wrong; generated videos often show unnatural movement.
• Check reliable sources such as national parks, aquariums and science outlets.

Nature keeps surprising us

Hundreds of new species are described every year, and many familiar ones still hold secrets, like those red lips. Next time you see an "impossible" animal on social media, remember this little fish from the Galápagos: sometimes reality beats fiction, and it's worth checking before you share.