Video Library Contents of Alevin to Fry Development



The following folders show the development of eggs on their way to becoming rainbow trout. Each folder contains one or more video files showing how Eggs/Alevins behave at different stages in the process:   


Delivered Eggs Hatched Eggs (Alevins 0% developed)Fry (100% developed). 


We use the day the eggs hatch as the zero point in the % developed scale. The amount of time between egg delivery and hatch will depend on individual aquaria temperature. However, unlike the day scale, the % development should be independent of different aquaria running conditions.


To best view the developmental changes in the alevin, first download all the contents of the library folder to your computer. If you're unsure how to download files from Google Drive, please see the instructions at the bottom of this page.


Once downloaded to your computer, use your computers video player to arrange the files on your computer screen and play simultaneously to compare similar degrees of time lapse. Notice the changes between 10% changes may be subtle.


If you are actively running an aquarium and want to know when your Alevins will be xx% developed, use the SU Excel program that you can download from the documentation part of the gpff.org website (item7). Remember not all alevins will be at the same degree of development but your observations should show something close to the library videos


If you publish any of the files from this library you must identify the source as Jim Scherer @ Grizzly Peak Fly Fishers.


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Updated Alevin Library




How to download files from google drive:


Clicking any of the above links will take you to the sub-folder of the Updated Alevin Library on google drive and list the contained videos. 


To download an individual video, hover over the video with your cursor and click on the download icon that appears in the upper left corner, see yellow circle in below image.


Alternatively, you can select "Download All" from the upper right corner to download all contents of the current folder, see yellow oval in below image.


This applies to any individual file or folder in the Updated Alevin Library.





If you'd like to download the whole Updated Alevin Library at once, navigate to the Updated Alevin Library folder and select DOWNLOAD ALL from the upper right corner:






If you are logged into your google account, you will have different options.  Locate the drop down menu at the file path, as shown in the below image:















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