Research

Scientists have uncovered the secret of the toothy greenling - fish with 555 teeth

The North Pacific is home to veryscary-looking fish - big-toothed greenplants (Ophiodon elongatus). As the name suggests, they have a very large number of teeth. More precisely, their number reaches 555 pieces, and they are present not only inside the oral cavity, but also in the pharynx. Scientists have been studying these strange creatures for a long time and recently were able to reveal their next secret - it turns out that they lose 20 teeth every day. To make this discovery, they had to conduct an experiment using dyes and substances that glow in the dark. The experiment itself was carried out in a room without windows or other light sources. Sounds pretty interesting, so let's get into the details.

Toothy greenling, which will be discussed in the article

Content

  • 1 Who are the toothy raspberries?
  • 2 The way of life of toothed greens
  • 3 Toothed raspberries in cooking
  • 4 Fish with scary teeth

Who are the Toothed Raps?

Toothed raspberries are also known as serpentines andlive in the North Pacific Ocean. As a rule, the body length of adults reaches 50 centimeters, but individuals up to 1.5 meters long are also known to science. This is a valuable object of sport fishing - the largest greenling weighed about 59 (!) Kilograms. The color of the body of these fish depends on the shade of the soil, thanks to which they perfectly mask against the background of the seabed. Toothed raspberries live at depths of 3 to 400 meters, usually under rocky areas.

Habitat of big-toothed greens

Tooth-toothed greenback lifestyle

The larvae of toothed greenplants are only 1centimeter. At night, they plunge into deep waters and, with age, begin to lead a bottom life. At first they keep in groups, but as soon as they grow up to 4.5 centimeters, they begin to live separately. In the first two years of life, males and females develop at the same rate. But then the females begin to grow much faster. Based on this, it can be assumed that the largest individuals that were seen by people were female. Males of toothed greenling live for about 14 years, and the maximum age of females reaches 25 years.

Toothy greenling in its natural habitat

The larvae of these fish feed on tiny creatures.like baby crabs and herring. But already from the age of one, they switch to large individuals. Adults are avid predators and mainly feed on other fish, crabs, squid and octopus.

Toothed raspberries can grow to enormous sizes.

Toothy raspberries in cooking

Despite their terrible appearance, toothyThe rasp is a valuable commercial fish. In terms of quality, their meat is not inferior to salmon and halibut. In young fish, the meat has a greenish tint, while the adults have white meat. The liver of these fish contains many vitamins A and D, and the meat is rich in insulin. On ordinary fishing rods, green rags rarely come across, therefore, in the course of commercial fishing, fishermen use bottom nets. In 1991, a record number of toothed greenling was caught - more than 9 thousand individuals.

Some of the greens are colored blue

See also: Toad fish can make loud sounds, but they risk disappearing due to people

Fish with scary teeth

The structure of the jaws of the toothed rasp is strongdiffers from the design of mammalian jaws. Instead of incisors, fangs, and so on, these creatures' mouths are filled with hundreds of microscopic teeth. They are found not only in the mouth, but also on the palate - the upper part of the mouth. Immediately after the main jaw, an additional, nasopharyngeal jaw is located. The teeth located there are needed for chewing food.

The mouth of one of the toothed rasp

Scientists recently led by biologist CarlyCohen (Karly Cohen) observed twenty big-toothed raspberries in the aquarium of the Washington city of Friday Harbor. Scientists wondered how often these creatures lose their teeth. Since the rasp's teeth are very small, it was very difficult to keep track of their loss.

Toothy raspberries camouflage well for their surroundings.

To make things easier for themselves, scientists have placed fishinto a separate container of dye to make their teeth red. The carnivorous creatures were in this container for some time and, presumably, lost some of their teeth. After that, they were moved to another reservoir with substances glowing in the dark (fluorescence). The remaining teeth of the fish turned green. By comparing the number of red and green teeth, the researchers were able to find out that every day predators shed about 20 teeth from the pharynx.

Capturing and cooking a Toothed Greenleaf with Blue Meat

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In the end, it turns out that the scary-lookingfish lose teeth as quickly as they grow new ones. This is not the only discovery of this kind in recent years. In 2019, scientists found that piranha fish change teeth in whole blocks. Here is an article about this discovery.