Can we examine the teeth of living fish and other vertebrates in detail, repeatedly over time, without harming them?

Courtesy of John Long The new research on Polypterus is the smoking gun that now supports the idea that fish such as Gogonasus were able to breathe in air through their large spiracles.

She watched as the Polypterus writhed, periodically launching itself into the air in twists and spins. After some time, though, the fish calmed down and began to do something very non-fish-like.

The modern fish they studied is called Polypterus senegalus, which has both gills and lungs, as well as a remarkable ability to use its pectoral fins for locomotion.

Caption Step-by-step process of taking fish teeth impressions: The researchers took teeth molds from Polypterus fish (about 20 cm long); (A) setting up the materials; (B) carefully sedating the ...

There have been fish and fossils found with leg-like fins, but now scientists have raised such animals themselves. Three researchers raised a fish called Polypterus, also known as Bichir, to learn ...

A new view of evolution is being put forward by an Ottawa biologist, thanks to an African fish that can leave the water and crawl on land. The little Polypterus fish isn’t pretty, but it has a ...

From a Leopard Gecko, to a Polypterus Endilcheri and his Goyder River Rainbow Fish.Also among Nick's pets, an Australian Lung Fish, Indian star tortoises and tarantulas.So you may wonder why does ...

A polypterus senegalus or “Walking Fish” walks by using its fins and body for support. Scientists have studied the effect of a lifetime of walking on a certain type of fish. The results, say ...

Being water-based creatures, the 'noses' of polypterus fish are located on the top of their heads. Physiologists based at the US Scripps Research Institute spent more than 360 hours observing how ...

This fish has been separated from other fish species for about 360 million years. Due to this long period of evolutionary isolation, Polypterus still has many primitive characteristics that provide ...

An unusual species of fish that can walk and breathe air shows how ancient tetrapods may have adapted to life on land, researchers say.