Chordates
All vertebrates belong to this phylum
Chordata
Two main characteristics of vertebrates
They have a backbone and a well developed skull
Four characteristics that all fish share
Born to swim; brain tracks info from senses; breath underwater; and Sexual fertilization.
This type of fish has paired fins supported by thin rays of bone.
Ray-finned fishes
An animal that has a backbone
Vertebrate
Name the three groups of chordates
Vertebrates, Lancelets, and Tunicates
A tough, flexible material that make up the skeletons of embryos.
Cartilage
Fish body parts that helps steer, stop and balance.
Fins
The three types of fish that exist today.
Jawless fish, Cartilaginous fish, and Bony fish
A gas filled sac that is used to control buoyancy in fish
Swim Bladder
What are the four main body parts of a chordate
Tail, Notochord, Hollow Nerve Cord and Pharyngeal Pouches
Most fish are cold blooded, so they are called .....
Ectotherms
When the female fish lays eggs and the male deposits sperm over the eggs in the water.
External fertilization
Fish that have thick, muscular fins.
Lobe-finned fishes
A respiratory organ used by fish to extract oxygen from water.
Gill
A stiff but flexible rod that gives the body support
Notochord
Mammals and birds are warm blooded and called ......
Endotherms.
Fish use this organ to breath by removing oxygen from the water.
Gills
These fish have a skeletal system made of bone.
Bony fish
An organism that uses the heat in the environment to regulate its body temperature.
Ectotherm
Runs along the back and is filled with fluid - becomes the spinal cord in vertebrates.
Hollow Nerve Cord
If the outside temperature is increasing what happens to the body temperature of an ectotherm
It increases.
The first vertebrates on Earth.
Slimy, smooth skinned fish.
Jawless fish
An invisible line along the side of a fish that is a sensory organ used to detect vibrations in the water.
Lateral Line