Pisces- Class Chordata, Subphylum Vertrebrata

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Pisces- Class Chordata and Subphylum Vertebrata. 

The Agnatha (Jawless) classes are;

Class Myxini (Hagfish)

Image result for hagfish

  • 70 species
  • Marine fish
  • Feed on annelids, crustaceans, dead fish and molluscs
  • Feed by tearing flesh away
  • They produce slime as a defense when being attacked
  • Can knot their tail for my leverage (can do this as have no bony skelton)

Class Petromyzontida (lamprey) 

Related image

  • 41 species
  • Parasitic or predatory
  • Can **** onto rocks or prey (**** out bodily fluids)
  • They use their tongues to feed- attach to by fish by buccal funnel7

Gnathostomata (have jaw) classes are;

Class chondrichthyes (cartilaginous)

Related image (http://factsanddetails.com/media/2/20120518-Spotted_Eagle_Ray%3C/em%3E(Aetobatus_narinari)2.jpg)

  • 850 species
  • Predators
  • Well developed sense organs
  • powerful jaws, swimming musculature
  • Internal fertilisation
  • Rays use bearing to fertilise and have dorsal fins, whereas skates use…

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