Life Cycle
What is the 2nd stage of the salmon life cycle called?
Alevin
What is the red bag attached to the newly hatched fish?
yolk sac
Where are eggs laid?
in gravel in a stream
List 3 predators
answers may vary
At what stage do the parr marks dissappear?
Smolt
What does a fish use to breathe?
its gills
How many salmon will survive to be spawners from a nest of 2500 eggs
2
List 3 types of pacific salmon
pink, chinook, coho, steelhead, chum
At what stage do they adjust to saltwater
smolt
What is the top fin called?
dorsal fin
What three Cs do fish need in a tank?
cool
clean
clear water
What do salmon use to hear?
lateral lines on the sides of their bodies
Because they spawn (lay eggs)
What are the red things inside the gills called?
rakers
What does ATU stand for?
Accumulated Thermal Units
Why was the salmon so rich?
It lived by a riverbank.
the nutrients feed plants and the growing alevin in the eggs
What is the body part that helps them go up to the top of the water for food?
Swim bladder
What word means "can live in both fresh and saltwater?"
Anadromous
What will be missing in an egg that will not hatch?
eyes