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The life of baby
     Goliath
   Chelsea Engeholm
Introduction
   Our Medaka egg was sent from Clarion
  all the way to here. My partner and I
   had to take care of this little egg.
    Alyson and I named our fish Goliath
 because it was a cool but random name.
 We had to change our egg’s water every
   day so it would stay fresh. We could
   only use distilled (spring) water in
     the dish we kept him in. He had to
    stay in room temperature so that he
  wouldn’t croak.Goliath hatched on the
  seventh day, and on that day he was a
   free little fish. He swam around and
 around very fast. My partner and I got
    to take our fish egg home. Although
   the egg is hatched it needs fed with
      special food that Mrs. Maine had.
  Being that it was a hassle, Aly and I
             left Goliath there!
Day 1

4-7-11


 We think our Medaka Fish is at
stage 13 because if you look at
the lateral view in the Japanese
Madaka book, it looks similar to
the one shown. It may not be 13
hours old yet, but it sure looks
like it. In this stage the
dorsal fin gastrula has formed.
A thin crease clearly marks the
dorsal lip where involution
begins. We did not take a video
on the first day.
Day 2

4-8-11


 Our Medaka Fish is at stage 22
because the Optic Lens and
Otocyst has developed. We think
that it is 40 hours old. In this
stage the eyes are starting to
form but they are very hard to
determine what they actually
are. On the second day the heart
was beating 88 beats per minute.
Day 3

4-11-11


 Our Medaka Fish is at stage
25-26 because it is similar to
the one in the book. You can see
body movement and a lot of
twitching, but you can also see
the two black granules speckle
the optic cup. (In another words
the eyes) On this day the heart
was beating 134 beats per
minute.
Day 4

4-12-11


 Our little Medaka fish as came
along way, and in stage 29 we
saw the urinary bladder form and
also some other fins, such as
the Caudal. The urinary bladder
wasn’t a greenish tint but you
could still see the structure.
On Day 4 the little guys heart
beat was 120 per minute.
Day 5

4-13-11


 On stage 29-30 the veins are
really starting to show, and you
can see the tail more. In this
stage the urinary bladder was
green, and you could really see
it. The heartbeat was faint. But
the most you could really see
was very detailed.
Day 6


4-14-11


 Stage 33 is where our Medaka
fish is. A lot of his organs
have developed, and the colors
are becoming more detailed. But
also there is more movement than
usual.
Day 7

4-15-11


Our little Goliath hatched on
Day 7. He grew into a beautiful
baby.This picture he is at the
stage of 36. In this stage the
swim bladder has become about
the size of the oil globule. The
urinary bladder, spleen, and
liver are located on the left
side.
Day 7


Our little Goliath hatched on
Day 7. He grew into a beautiful
baby.This picture he is at the
stage of 36. In this stage the
swim bladder has become about
the size of the oil globule. The
urinary bladder, spleen, and
liver are located on the left
side.
Day 7

This is the rear of Goliath, the
caudal fin.


http://
gottalovebio.wikispaces.com/
Chelsea+E.


Here is a video of him hatched!
Conclusion

This project taught us a
lot about embryology and
it was neat to watch the
egg change from day to
day.We learned how to
take care of a fish and
learned what was
necessary for it to
live.
Resources
http://en.wikipedia.org/
wiki/Oryzias_latipes

http://biol1.bio.nagoya-
u.ac.jp:8000/

http://
gottalovebio.wikispaces.
com/Embryology

Pictures taken by the
microscopes in school.

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Medaka Project

  • 1. The life of baby Goliath Chelsea Engeholm
  • 2. Introduction Our Medaka egg was sent from Clarion all the way to here. My partner and I had to take care of this little egg. Alyson and I named our fish Goliath because it was a cool but random name. We had to change our egg’s water every day so it would stay fresh. We could only use distilled (spring) water in the dish we kept him in. He had to stay in room temperature so that he wouldn’t croak.Goliath hatched on the seventh day, and on that day he was a free little fish. He swam around and around very fast. My partner and I got to take our fish egg home. Although the egg is hatched it needs fed with special food that Mrs. Maine had. Being that it was a hassle, Aly and I left Goliath there!
  • 3. Day 1 4-7-11 We think our Medaka Fish is at stage 13 because if you look at the lateral view in the Japanese Madaka book, it looks similar to the one shown. It may not be 13 hours old yet, but it sure looks like it. In this stage the dorsal fin gastrula has formed. A thin crease clearly marks the dorsal lip where involution begins. We did not take a video on the first day.
  • 4. Day 2 4-8-11 Our Medaka Fish is at stage 22 because the Optic Lens and Otocyst has developed. We think that it is 40 hours old. In this stage the eyes are starting to form but they are very hard to determine what they actually are. On the second day the heart was beating 88 beats per minute.
  • 5. Day 3 4-11-11 Our Medaka Fish is at stage 25-26 because it is similar to the one in the book. You can see body movement and a lot of twitching, but you can also see the two black granules speckle the optic cup. (In another words the eyes) On this day the heart was beating 134 beats per minute.
  • 6. Day 4 4-12-11 Our little Medaka fish as came along way, and in stage 29 we saw the urinary bladder form and also some other fins, such as the Caudal. The urinary bladder wasn’t a greenish tint but you could still see the structure. On Day 4 the little guys heart beat was 120 per minute.
  • 7. Day 5 4-13-11 On stage 29-30 the veins are really starting to show, and you can see the tail more. In this stage the urinary bladder was green, and you could really see it. The heartbeat was faint. But the most you could really see was very detailed.
  • 8. Day 6 4-14-11 Stage 33 is where our Medaka fish is. A lot of his organs have developed, and the colors are becoming more detailed. But also there is more movement than usual.
  • 9. Day 7 4-15-11 Our little Goliath hatched on Day 7. He grew into a beautiful baby.This picture he is at the stage of 36. In this stage the swim bladder has become about the size of the oil globule. The urinary bladder, spleen, and liver are located on the left side.
  • 10. Day 7 Our little Goliath hatched on Day 7. He grew into a beautiful baby.This picture he is at the stage of 36. In this stage the swim bladder has become about the size of the oil globule. The urinary bladder, spleen, and liver are located on the left side.
  • 11. Day 7 This is the rear of Goliath, the caudal fin. http:// gottalovebio.wikispaces.com/ Chelsea+E. Here is a video of him hatched!
  • 12. Conclusion This project taught us a lot about embryology and it was neat to watch the egg change from day to day.We learned how to take care of a fish and learned what was necessary for it to live.

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