10/28/19- I removed 21 eggs and alevins from the egg basket as well as a number of egg shells. Check out the picture below!
10/31/19- I removed 2 alevins from the egg basket. Check out the pictures and videos below!
Pictures below are from 10/28/19. The picture on the left is what I saw when I first opened the trout tank this morning. The picture on the right shows the egg shells, eggs, and alevins that were removed.
The picture below is from 10/30/19. You can see one of the trout did not hatch properly, and the other three are deformed such that their spines are too curved.
Below are pictures from 10/31/19.
This is a compilation of three video clips showing a close-up of a trout alevin (sac-fry) breathing in a petri dish with trout tank water. Notice that there is a gap between the outside of the yellow yolk-sac and the outer membrane. This is a deformity in development. In normal development, the entire yolk sac and membrane will get smaller as the alevin consumes the yolk. However, when gas gets trapped and you see a gap, the alevin don't survive much longer.
Please note- the third video was taken using my phone as it would appear looking through the microscope. Due to automatic adjustments by the camera phone, this causes the image to look less clear.
Now that some of the eyed eggs have hatched, they are in the alevin or sac-fry stage. At this stage, the trout stay at the bottom of the egg basket and consume their yolk sac for nutrition. They are still too dense to swim to the surface, but when the water is disrupted, watch them wiggle!
Here is the YouTube link: https://youtu.be/h2MYt-GLuLk
Make sure you are viewing this in HD! Click on settings on the YouTube clip and click 1080p for the full resolution video.
Trout Club helped find the water quality of the trout tank.
Week 1: Beginning 10/21/19
10/22/19- I removed one dead egg.
10/25/19- I removed three dead trout. This week, at least 15 egg shells have been removed. So many trout have hatched already!
Below is a picture of the egg shells removed from the Trout Tank, as well as three alevins that were removed from the basket for suspicion of being dead. After looking in the microscope and not finding a heart beating, it was confirmed :(
During fourth period today, students in the Trout Team Club helped Mrs. Daniel to separate the good eggs from the bad (dead) eggs. You can tell an egg is dead because it looks whitish in color, rather than a translucent orange color with the eyes visible.
Interestingly enough, it looked like a few eggs already hatched. Stay tuned!
TROUT COUNT- 10/21/19 Day 1
It's of-fish-al! The rainbow trout eyed eggs have arrived and are safe in their basket.
Right now, the eggs have a density that is higher than the density of water. As a result, they sink to the bottom of the water. This is why a basket that hangs near the top of the water is so important. It keeps all the eggs together, such that if an egg dies, it can easily be removed. It also keeps them away from the immense pressure of the filter and chiller outflows, which would easily destroy the fragile eggs.
A 3 gallon water change was done, and 20 mL of Nitrifying Bacteria was added.
Today the trout team learned how to find the pH of the trout water.
Water Quality Update- 10/16/19