Lampreys/Lamprey eels explanation

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Lampreys and how their body works.

The google definition of lamprey eels. Lampreys/Lamprey eels are an ancient extant lineage of jawless fish of the order Petromyzontiformes, placed in the superclass Cyclostomata. The adult lamprey may be characterized by a toothed, funnel-like sucking mouth. ... The plural form lamprey is sometimes seen.

The features of  lampreys are slimy, Jawless, scale-less, Bone less, and slender. How they stay on to the fish/animal that they bite onto they have a circle like sucker that they latch onto their prey. Then they use their tongue to break through the fish scales after they break that they start eating the meat. After they eat the meat they start sucking the blood(Not a lot of species of lampreys suck the blood). Some people call the lamprey an underwater vampire/leech because they slowly drain the blood out of the fish’s body. 

The mouth of a lamprey is one of the weirdest mouths in the animal kingdom therefore it can do some weird stuff right?

The reason that lampreys are very weird is because of evolution and evolution led to a very very strange and weird fish. One of the weird things about the lamprey is that it doesn't have a jaw. The reason that lampreys does not have a jaw is a result of millions of years of evolution. I’ll list some of the weird things about a lamprey. First kind of weird thing is that lampreys don’t eat with their teeth they break up the meat with their tongue then they break that chunk of meat with their Pharyngeal teeth(or throat teeth). 

Another reason why lampreys are weird is that they are one of the only 2 families (with 50 species in each family) of jawless fish and they are hagfish and are good friend lamprey eels.  

References

https://www.natureconservancy.ca/en/blog/archive/somethings-fishy-the.html#:~:text=To%20other%20fish%20species%2C%20lampreys%20are%20like%20underwater%20vampires.&text=This%20enables%20them%20to%20latch,five%20to%2040%20inches%20long.

https://niwa.co.nz/our-science/freshwater/tools/fishatlas/species/fish-species/lamprey#:~:text=The%20lamprey%20spends%20most%20of,out%20a%20meal%20of%20blood.

https://en.wikipedia.org/wiki/Lamprey

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5071338/#:~:text=Ancient%20lamprey%20fossils%20have%20provided,known%20as%20%22evolutionary%20diapause%22.

https://www.wired.com/2014/07/absurd-creature-of-the-week-lamprey/

https://dev.biologists.org/content/139/12/2091