Trout Life Cycle

Where do female trout lay their eggs?

• In deep ocean trenches

• On the gravel bottom of streams and lakes

• Attached to floating vegetation

• In sandy riverbanks

What do sac-fry rely on for nourishment?

• Small insects

• Algae and plants

• A yolk sac on their underside

• Food provided by adult trout

The growth rate of cold-blooded creatures, like trout, is tied to the...

(a)  

What environmental factor directly affects the growth rate of trout?

• Water temperature

• Amount of sunlight

• Presence of predators

• Water depth

What is the process called when adult trout return to their birthplace to lay or fertilize eggs?

• Migration

• Spawning

• Hatching

• Metamorphosis