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Ridged creature — found in river drainage — is a new species in India. Take a look

In the mountainous rivers of Nagaland, India, a new species was found in a river drainage.
In the mountainous rivers of Nagaland, India, a new species was found in a river drainage. Arindam Saha via Unsplash

In a fast-flowing river in India, a small fish battles the current.

Less than 3 inches long, the animal uses pleated skin on the bottom of its body as a self-made sucker, holding onto the rocks to keep its place in the water.

The fish has long been known in the region, even contributing to the local diet, researchers told EastMojo, but it wasn’t until a recent research trip that scientists realized they may be looking at a species that had never been formally identified.

Glypothorax pongoensis is a new species of rheophilic catfish, researchers said in a study published Aug. 28 in the peer-reviewed Journal of Natural History.

“Measuring just three inches in length, this new species is a master of survival in the fast-flowing rivers of Northeast India,” researchers told EastMojo.

The new catfish species is just three inches long, according to the study.
The new catfish species is just three inches long, according to the study. Pratima Singh

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The fish has a “rounded snout” and a “saddle-like” plate on its back, according to the study.

On the fish’s underside, there is an “ovate-shaped” suction pad covered in skin ridges, researchers said.

“Armed with a unique thoracic adhesive apparatus — a kind of natural suction pad — it clings to rocks and withstands the rushing currents of its mountainous habitat,” researchers told EastMojo.

The fish is a mix of cream and black colors, according to the study, with a faint stripe on its back.

Skin ridges on the bottom of the fish help it to suction to rocks in the fast-flowing river, researchers said.
Skin ridges on the bottom of the fish help it to suction to rocks in the fast-flowing river, researchers said. Pratima Singh

Like all catfish, the new species has barbels, or feelers, around its mouth that resemble the whiskers of a cat. G. pongoensis has four pairs of barbels, “shorter than head, slender, almost reaching base” of the side fin, researchers said.

The species was named after the Pongo Forest habitat where it was found, in Nagaland, India, in the Brahmaputra River drainage, researchers said.

People in the region have “long known” about the catfish, EastMojo reported, even catching them to eat, but were unaware the species had never been identified by the scientific community.

The fish joins 27 others from their genus, Glyptothorax, that are found in the same river system, according to the study.

The new species lives in the mountainous state of Nagaland, in northeastern India along the border with Myanmar.

The research team includes Diamond Rajakumar Tenali, Pratima SIngh, Gudabandi Vijaya Pratap, Nyamkham Phom, Maka Ratnaraju and Laishram Kosygin.

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This story was originally published September 9, 2024 at 11:50 AM with the headline "Ridged creature — found in river drainage — is a new species in India. Take a look."

Irene Wright
McClatchy DC
Irene Wright is a McClatchy Real-Time reporter. She earned a B.A. in ecology and an M.A. in health and medical journalism from the University of Georgia and is now based in Atlanta. Irene previously worked as a business reporter at The Dallas Morning News.
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