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Meet the hairs. Alien Sheda – a fish that barely swims, covered with teeth Chicago News

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Bites in the Shadd Aquarium. (Shedd Aquarium)

Recently at the Shedd Aquarium came a group of Pacific prickly deep-sea fish, such a strange fish that the fact that it swims poorly is only perhaps the third most amazing thing in it.

The first and most amazing thing would be that it is covered with teeth, not scales – hence the “lump” in the kamakos.

The second is the strangest: his pelvic fins have turned into suckers – hence the “sucker” into a sucker.

This ugly, charming species has been located in the polar game zone of Shedd, where even in competition with perennial penguins that attract attention, boulders are sure to turn heads.

Let’s meet newcomers.

Armed to the teeth

Breasts covered with tooth-like protrusions of enamel.  (Shedd Aquarium)Breasts covered with tooth-like protrusions of enamel. (Shedd Aquarium)

The scales serve as a kind of shell for fish. Bites (Eumicrotremus orbis) start this concept a step further by having prickly protrusions that were once thought to be made from keratin – the same substance found in human hair and nails – but recent research it turned out to be enamel. “Wasaks in the teeth!” University of Washington Scientist Carly Cohen, who is co-author of the study, told WTTW News.

Thus, the boulders resemble sharks, whose skin is covered with a flat V-shaped skin teeth (aka, “tiny skin teeth”). However, this is where the similarity of these two fish ends. Teeth reduce resistance, so sharks can swim faster. While hairy, well …

About those swimming skills

Boulders live at the bottom of the seabed.  They can be found in cold northern waters.  (Shedd Aquarium)Boulders live at the bottom of the seabed. They can be found in cold northern waters. (Shedd Aquarium)

Sometimes compared to golf or ping pong swords, cusps have a round shape, which is the antithesis of hydrodynamic smoothness, commonly associated with fish. They are slow and not very agile swimmers, and it is believed that their armored rows of toothed spikes provide a buffer during a collision. Sometimes the hair is better to stay in place, which leads us to …

Bonding landing

A one-size-fits-all sucker on the underside helps this poor swimmer take hold.  (Shedd Aquarium)A one-size-fits-all sucker on the underside helps this poor swimmer take hold. (Shedd Aquarium)

This suction cup on the underside is an evolutionary adaptation that allows sucker to cling to rocks, kelp or any other convenient surface so as not to be demolished by ocean currents. Similarly, males of this species are fixed in place for eight weeks, protecting the nest of deep-sucking eggs. (Female suckers lay eggs and then sail back into the open ocean.)



Contact Patty Wetley: @pattywetli | (773) 509-5623 | [email protected]

https://news.wttw.com/2022/05/06/meet-lumpsuckers-shedd-s-newcomer-fish-can-barely-swim-covered-teeth

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