San Francisco — Meet Methosera, who loves to eat fresh figs, rubs her belly and is believed to be the oldest living aquarium fish in the world.
The Bible says that Metsera was Noah’s grandfather and was 969 years old. The fish Metosera isn’t that old, but biologists at the California Academy of Sciences believe it’s about 90 years old and he has no living companions.
The Methuselah is a 4-foot (1.2 m) long, 40-pound (18.1 kg) Australian lungfish that was brought from Australia to the San Francisco Museum in 1938.
The Australian lungfish, a primitive species with lungs and gills, is thought to be an evolutionary link between fish and amphibians.
Not surprisingly, the San Francisco Chronicle first appeared in 1947. “These strange creatures have green scales that look like fresh artichoke leaves.
Until a few years ago, Australia’s oldest lungfish was at the Shedd Aquarium in Chicago. However, the fish named Grandpa died in 2017 at the age of 95.
“By default, Metcella is the oldest,” said Alan Yang, senior biologist and fishkeeper at the Academy. Metocera caretakers believe that fish are female, but it is difficult to determine the sex of a species without dangerous blood draws. The academy plans to send a small sample of her fins to Australian researchers. Researchers try to identify the sex and determine the exact age of the fish.
Yang says that Metsera likes to rub her back and belly and has a “mellow” personality.
“I tell volunteers that she pretends to be an underwater puppy and is very mellow and gentle, but of course, when she becomes eerie, sudden energy attacks occur, but most of the time she Is just calm, “Yan said. Metosera has developed a seasonal fig flavor.
“She’s a little noisy and I only like figs when they’re fresh and in season,” said Janet Peach, a spokeswoman for the California Academy of Sciences.
There are two other young Australian lungfish in the academy, both of which are considered to be in their 40s or 50s.
Australia’s lungfish are now endangered and can no longer be exported from Australia’s waters, so academy biologists say it is unlikely to replace Metosera after her death.
“We only provide her with the best care we can provide, and hopefully she will prosper,” said Yang.