Adaptations
A fish is an aquatic vertebrate that has ______ and fins and usually skin covered with scales.
Gills
There are four classes of fish. What class of fish is Osteichthyes?
Bony fish
One shark may use more than 20,000 ________ during its lifetime.
Teeth
Most bony fish have and _______ composed of bony plates attached to muscles that cover the gills on each side of the head.
Fish have a ______ chambered heart and a single loop blood circulation.
Two
What increases a fish's stability and maneuverability in the water?
Paired fins
Fish belong to the Kingdom Animalia, Phylum _______, and subphylum Vertebrata.
Chordata
Sharks may initially detect prey from a kilometer or more away with these large ___________organs.
Olfactory
Of the 3 different kind of bony fish scales which ones are circular and smooth ?
Cycloid
What is it called when fish maintain concentrations of salt and water that differ from their surroundings. (trying to keep the body balanced at all times)
Homeostasis
Fish are ______ which allows them to move rapidly in water.
Streamlined
Lampreys can be marine or freshwater, and free-living or _________.
Parasitic
During the final stages of attack, sharks are guided to their prey by the _________fields that surround all animals.
Bioelectric
Bony fishes growth is dependent on what?
Temperature
Fish have the ability to detect chemicals in the environment. What is it called?
Chemoreception
Most species of fishes are _______in which the dorsal surface is darker than the ventral surface
Countershaded
Class Chondrichthye includes sharks, rays, skates, and chimeras. This class has skeletons made of what flexible, light weight material?
Catilage
What is the largest shark, which can grow to 60 feet long?
Whale Shark
_________is the egg laying behavior of fish and varies widely in bony fish.
Spawning
Fish are poikilothermic ectotherms. What does this mean?
Cold blooded
Bony fish can store gases in their _______?
Swim bladder
Most fish are ________ with external fertilization and external development of their eggs and embryos.
Dioecius
What is the fastest shark swimming at speeds of up to 20 miles an hour?
Mako
This type of fish spend most of their lives in freshwater but migrate to the sea to spawn, such as fresh water eels.
Catadromous
Hagfish are marine, bottom dwelling __________ or predators that feed on dead or dying fish.
Scavengers