Fish breathe using...
What are gills?
How can the age of a fish be determined?
What is by counting the annual rings on its scales.
The structure that protects the gills.
What is the operculum?
A ganoid fish scale shape.
What is diamond shaped?
What is a barbel and what is its function?
What is a whisker-like sensory structure hanging from a fish's lower jaw which allows it to taste and feel along the substrate
What happens to a fish's respiration rate as the temperature increases and why?
What is respiration increases because its metabolism also increases while the amount of oxygen in the water decreases
Fish must maintain concentrations of salt and water that differ from their surroundings. This internal harmony is referred to as...
What is homeostasis?
Paired fins allow the fish to steer and go up and down.
What are pectoral fins?
The evolutionary innovation in class Osteichthyes.
What is a true backbone?
They type of fish scale seen here.
What is cycloid?
Define spawning
What is female lays many small eggs which are fertilized externally by the male
Which fin(s) provides the main thrust for swimming for the majority of bony fish?
What is caudal fin.
Fish can pump water over the gills through the opening and closing of the operculum. This helps a fish...
Osteichthyes spines connect the skull at the front of the fish to the tail at the rear and is made of many vertebrae. The spines purpose is...
What is to protect the spinal cord?
Fish gills are fanned out because...
What is it increases the surface area of the gills to exchange gases (O2 and CO2).
Name a ray-finned fish.
goldfish, clownfish, lionfish, scorpion fish