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By: Jason Burmeister
 Agnatha:
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Lack a Jaw and Paired fins
Skeleton is Cartilaginous
They have seven or more paired gills
 Chondrichthyes:
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They mainly live in marine areas, but some live in freshwater
Chondricthyes all are made up of cartilaginous skeleton
They all have pectoral fins
 Osteichthyes:
They are characterized by a relatively stable pattern of cranial bones
Bony fish usually have swim bladders, which creates a neutral balance between
floating and sinking
 Most have smooth overlapping scales that are ganoid, cycloid, and ctenoid
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Kidney
Swim Bladder
Gonads
Intestines
Stomach
Liver
Heart
Gills
Brain
Spinal Chord
Spine
Muscle
Vent
 Fish is able to eat a wide variety of food.
 The food is broken down by the
esophagus
 The food is further digested in the
stomach
 The liver and pancreas add enzymes
and chemicals
 The intestine completes the tract.
 Fish get oxygen from the water not
the atmosphere
 Fish use gills to breathe
 Gills are protected under the
operculum
 Oxygen is absorbed by a thin
membrane which covers the gills
 At the same time carbon dioxide is
being released from the blood
 Closed Circulatory System
 Heart Pumps in a single loop
 From the Heart to Gills
 From the Gills to the rest of
the body
 From the body back to the
heart
 Two-chambered heart.
 Waste is released as
ammonia
 Gills
 Kidneys
 Saltwater Fish loose water
 Special Kidneys
 Small brain to body size
 Sharks has large brains
 Fore Brain
 Mid Brain
 Hind Brain
 Brain Stem
 Exerting force
 Achieved by contracting
muscles
 Flexion
 Vector Forces
 Lateral Movement
 Spawning
 Females lay
eggsReproduction
 Males Fertilize
 Seed is milt or soft roe
 Most species spawn in the
same place
Hag Fish
 Agnatha:
Great White Shark
 Chondrichthyes:
Yellow Fish Tuna Fish
 Osteichthyes:
 Catfish have 27,000 taste buds
(humans have 7,000)
 There are over 30,000 species
of fish
 Tuna fish can swim up to 43
mph
 Over 1,000 fish threatened by
extinction
 Sharks and Rays do not have
swim bladders.
 http://www.ecomare.nl/en/encyclopedia/organisms/a
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nimals/fish/fish-biology/reproduction-of-fish/
http://en.wikipedia.org/wiki/Fish#Excretion
http://facts.randomhistory.com/fish-facts.html
http://en.wikipedia.org/wiki/Osteichthyes
http://en.wikipedia.org/wiki/Chondrichthyes
http://en.wikipedia.org/wiki/Agnatha
http://vertebrates.voices.wooster.edu/chondrichthyes/