Day5
On day 5 more growth of the fry were seen. Of notice was the
presence of the pectoral fins which the fry were beginning to use with
some success.
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| Day 5 - Pectoral fins:
(Above) The pectoral fins are now present on the fry. (Below)
The fry seem to be able to use them to varying degrees of success.
Click to play. |
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The gills and mouth are also now more developed and
appear to be used more. Although it can be difficult to see there is blood
flowing through the gills.
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| Day 5 - Gills and
Mouth: (Above) The gills are now more developed and show more
area in which to exchange oxygen and carbon dioxide. (Below)
The mouth is also being used more. If you look carefully you can see
blood flowing through the entire head. |
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The heart is also much more developed now, larger, and
beating more rapidly. It appears to be a 4 chamber heart pumping blood
around the body.
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| Day 5 - Heart: The heart is much larger and seems
to beat much more
vigorously. (Above) Still image. (Below) Time
lapse of the heartbeat. Click to start. |
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