Fri. Nov 26th, 2021
 
Giant Fish

‘Living fossil’ fish from the dinosaur era still around: Study

The coelacanth, a giant fish still around from the Mesozoic era, is still around and can live up to 100 years, finds a study. This slow-moving fish grows at a very slow pace and when fully formed, can be as big as a human.

This amazing species of the deep has been given the nickname of ‘living fossil’. According to the study, coelacanths are nocturnal. This species has been around for 400 years, though it was thought to be extinct until they were found alive in 1938.

It’s a remarkable milestone in the field of marine biology as until now, it was believed by the researchers that coelacanths can only live up to the age of 20. But the French scientists, using the regular dating technique for commercial fish, found out that they actually can live up to a century.

‘Living fossil’ fish from the dinosaur era still around: Study

Giant Fish
Giant Fish

The age of a fish can be determined by counting the number of lines on the scale. While the same technique has been applied in the case of the ‘living fossil’, they later found out that some small lines were being overlooked which could only be seen with the help of polarized light.  According to the Bruno Ernande, one of the co-authors of the study, after inspecting the scale under polarised light, it was revealed that there were five smaller lines for one big one. The gathered information concluded that one small line corresponds with one year of life. This led them to ascertain the age of the oldest living species is 84 years old.

The females don’t mature until the age of 50 whereas the males are capable of reproduction by the age of 40 years. The strangest finding of this study is that the pregnancy in coelacanths can last up to 5 years.

The coelacanth is such an endangered species, that the only available specimen for the research were either already can’t or dead.

Subhangee Guha

Break the Newz.

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