2. Day 1, April 7 This is the day that I first met my Medaka egg. I decided to name him JJ. It had only been .2 hours since he was born. He was very new and didn’t have many features. Stage 2(.2 hrs)
3. Day 2, April 8 It is the second day of JJ’s life. I can’t believe what I see! His little heart is beating for the first time. I can actually see what was going on in his egg. heart Oil globules Yolk sac Stage 17 (23 hrs)
5. Day 3, April 11 JJ is developing even more. His blood is now visible. It is an red-orange color. JJ is starting to have more features for me to observe. Blood Optic cup/eye Stage 25
6. Day 4, April 12 It is my fourth day with JJ. I start to notice that he is more slowly developing than the other fishes. More things are visible this day, but less than the other groups. cytoplasm Stage 29
7. Day 5, April 13 It is the fifth day with JJ. I can actually start to see a fish in the egg. I can tell he is starting to develop more, and is getting closer and closer to hatching. Mouth/jaws Pectoral fin chorion Stage 31
8. Day 6, April 14 It is my sixth day with JJ. His heart is starting to beat faster and he is moving sometimes. I really hope that he hatches soon, but we will see tomorrow. Stage 34
9. Day 7, April 15 It is our seventh day with JJ. While other groups eggs have hatched, ours is still in its egg. I notice that it hasn’t changed much since the day before.
10. JJ’s Death We look under the microscope for a long time. After a little we notice that he is not moving and his heart is no longer beating. Our JJ is now dead.
11. Adoption of Sushi After the death of JJ, our group needs a new fish to observe. So, we picked out one of the extra fish. We decided to name him Sushi. He seems like he is much more developed than JJ was. brain somites
12. Sushi Hatches It has been a very eventful day. First, JJ dies, then we adopt Sushi and he hatches. I am sad that my time with Medaka fish is over. I will not be seeing Sushi again. It is a little sad to know this.
