Classification
List of levels of the classification system
Kingdom, Phylum, Class, Order, Family, Genus, Species
A flexible rod that extends along the entire dorsal surface
Notochord
Series of nerve endings along the fish's body that sense vibrations
Lateral lines
An internal gas filled sac
Gill cover
opericulum
The animals that belong the Phylum Chordata
All Vertebrates, Lancelets and Tunicates
(Cephalochordata, Urochordata)
Muscle tissue that lies beyond the posterior opening
Postanal tail
The anatomical term for belly region
ventral
The egg laying behavior of fish
spawning
Tiny feathery projections on gills
Lamellae
The subphylum of Fish and Mammals
Vertebrata
Four structures present at some stage in all chordates
1. Notochord
2. Dorsal Nerve Cord
3. Pharangeal Pouches
4. Postanal Tail
The location of caudal fin
Extends from the tail
Water that contains ammonia and ions
urine
Blood flows one way and water flows another way
Counter current
What vertebrates (except sharks and rays) have in common
Notochord present as an embryo, but replaced by backbone prior to birth.
This happens to the dorsal nerve cord in vertebrates
It enlarges to form the brain and the spinal cord
A set of paired fins on the ventral surface
pelvic fins
Deliver oxygen and nutrients to the body cells
circulatory system
Movement from areas of high to low concentrations
diffusion
The classification of Bony fish from Kingdom to Class
What is Kingdom Animalia, Phylum Chordata, Class Osteichthyes
The chordates that keep their notochords for their entire life
Subphylum Cephalochordata or lancelets
A fin on the dorsal surface and helps keep fish upright
dorsal fin
The reason fish lay large numbers of eggs
Mortality is high, so increases probability that some will survive to adulthood
These provide a very large surface area in the gills
gill lamellae