• sac Fry Turning Into Fry

    Posted by 6th Grade Students on 12/2/2015 12:30:00 PM

    There are very high levels of nitrites in the tank. There are some weak fish piled up in the corner of the egg basket.No dead fish yet but the the three sets of siamese twins are not looking good and niether are his friends in the corner. We started feeding the fish today because a few of them were starting to "swim up". this is a typical behavior of the fry after they have absorbed their egg sac. The food we are feeding the fish is just being dragged out of the egg basket and into the open water of the tank. 

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  • Sac Fry!!

    Posted by Marc DeJong on 11/13/2015 12:00:00 PM

    Our eggs are now all Sac Fry! sac Fry are the second stage of the trout's life when they hatch from their egg. The yolk sac is still connected to their bodies and the trout don't need to feed because they get their nutrients from their yolk sac. The kids had a funeral for a few of the fish that were unable to hatch, a few of which partially hatched but got stuck in the process.

    Sac Fry Close Up


    Partially Hatched

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  • Trout in the Classroom 2015/2016

    Posted by Marc DeJong on 11/4/2015 12:00:00 PM

    We received notification yesterday that our trout were packed and shipped! If all goes as planned, then we will be able to put the trout eggs into the tank today. We have prepared the tank for the fish eggs, now once we get the eggs we will separate the dead eggs from the live eggs. We are all excited for the eggs to come and even though the room smells like rotten eggs, we are still having lots of fun. The rotten egg smell comes from the bacteria we put into the tank. We have covered the tank with insulating foam to keep the water cold. Now all we need are the eggs. 

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  • Another New Phase

    Posted by Marc DeJong on 12/1/2014 11:30:00 AM
    We hope everyone had a happy Thanksgiving. As for the trout, some of them have absorbed their egg sacs and are full fledged fry now! This is a very fragile process in the trout life cycle. Our trout are going good. Chemical levels are good. Ammonia, Nitrite and Nitrate levels are within acceptable ranges. We only had one death over Thanksgiving break. Now we are feeding those trout that are starting the "swim up stage". These trout are starting to become active and will swim up off the bottom to look for food.
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  • Live and Dead eggs

    Posted by Chloe on 11/6/2014 10:55:00 AM
    Mr. DeJong separated the live eggs from the dead trout eggs yesterday. Today we looked at the dead eggs. We identified the eyes and food in the eggs. The live eggs are sensitive to light and sound so we had to be quiet around the tank. We took a look at one of the developed live eggs, we could see the eyes and their blood. 
    Expired Eggs Counting Eggs Newly Hatched Sac Fry  
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  • The Trout Are Here!

    Posted by Marc DeJong on 11/5/2014 6:00:00 PM
    The trout are here! Unfortunately they arrived in their climate controlled (they were shipped with an ice pack) package around 3:30. After 3 hours of acclimation, and some difficulty getting back in the building at 6:30, I was able to transfer the eggs from their plastic back home to their new nursery at SHMS. After all the anticipation from students yesterday, I cannot wait for them to come in and see the new arrivals tomorrow. Hopefully we will have some pictures to post soon!
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