Trout+Life+Cycle


 * __ Trout Life Cycle __**

Where: //within sand and gravel areas// spawn //in tributary streams or along the shoreline//
 * Spawning: **

When: //in the beginning of the fall Spawning takes place from late September to November during daytime//

// Males colors get darker and more intense and females starts to find a good nesting spot called the redd and males mature once a year //

**Eggs:** As the eggs develop the trout is forming in the embryo. They are a lot stronger than green eggs and they are very fragile when handling. Don’t put them in light they will kill over. Also make sure there are no dead eggs, if so get them out. Use eye droppers or a turkey baster to remove them. Record the dead eggs daily. The eggs need to be in a single layer. Eggs hatch usually after a month.




 * Alevin (sac fry): **

**__ Definition: __** A newly hatched trout still attached to and utilizing its yolk sac as a food source **__ Description: __** When the eggs hatch, the alevins will swim out of the hatching basket to spaces in the bottom of the tank. They will remain there until fully consume their yolk sacs which will take about a week. (Some alevin may not come all the way out of the egg.) They are still fagile at this stage, so avoid handling them. Any eggs cases with fungus or dead alevins should be removed as soon as possible and their numbers recorded on your daily record sheet.




 * Fry: [[image:brook_trout6.jpg width="233" height="210" caption="small fry"]][[image:brook_yrout67.jpg width="204" height="151" caption="baby brok trout (fry)"]] **

**Fingerlings:** **Fingerling brook trout**- the trout are almost at the top of their life, and are about 3 to 4 inches in length, and just about the same length of a human finger. The trout are at the prime of their life and now learning to live on their own. At the stage of a fingerling they eat worms, insects, etc . fingerling trout in the wild have strategies to avoid predators. young trout spend time in shallow water, hiding under and around rocks.



These are the fingerlings from our classroom.



fingerling trout

When: they’re two years old, trout are ready to lay eggs. Their colors change again, getting brighter, and they mate. 12 to 14 months to be full size. They eat aquatic insects, larvae, worms, frogs and fish.
 * Adults: **



**__ Timeline __** __ Spring __ Developing eggs hatch anytime from February to March. Hatch time depends on stream temperature.

__ Summer __ To hide from predators, young trout spend time in shallow water hiding under and around rocks.

__ Fall __ Females select a spot for a nest. She uses her tail to clear a spot for the eggs.

__ Winter __ Fertilized eggs develop. Oxygen comes from the steady flow of water. Nutrition for the eggs comes from eggs yolk.