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How would a global flood have affected fish populations?
Even my limited knowledge tells me a global flood would have changed the salinity, temperature and pH levels of most if not all fish habitats.
Some species of fish are robust while others are delicate. From my hobbiest youth, I know that many species of tropical fish - both fresh and saltwater - are highly sensitive to temperature and pH.
We don't see thresher sharks in Lake Tahoe, and we don't see brown trout in the South Pacific.
What effect would a global flood have on the world's fish species? I think it's safe to say that many varieties would have perished. Relying on scripture, Noah would have had to take these fish onto the ark, or we wouldn't see them today.
I'm interested in corrections/clarifications from biologists as well as explanations from creationists.
Because although God required Noah to go to extraordinary lengths to protect a very limited number of land animals, he decided to protect water creatures (and presumably plants also) himself.
Why?
Because cop out answer #71- It befitted his perfect plan to do so.
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Some creationists have attempted to defend the Flood scientifically in another thread. I was wondering if they had a scientific explanation for this, however flawed it may be.
Some creationists have attempted to defend the Flood scientifically in another thread. I was wondering if they had a scientific explanation for this, however flawed it may be.
The only attempted explanation I have seen is one citing that some species of fish are able to tolerate large variations in salinity.
Of course, this goes little way to showing that all species could survive a turbid, salty, 400'c dishwasher.
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With continents racing each other around the globe, popping up mountains like zits there would be steam ...and lava.
I'm willing to concede that point. I'll even concede salinity if someone can explain why there are no tuna in any fresh water lake.
Oh it's true, some species can do this, however, if they then wish to postulate that all current water organisms are decended from these few salinity tolerant survivors ..then they have another problem.
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Whilst some fish can cope with seawater or freshwater - the livebearing aquarium stalwarts Poecilia latipinna and Poecilia reticulata spring to mind - even they need a lot of time to adapt.
The result would be death for virtually all fish species. The eggs would fare no better; fish eggs (a) mostly hatch in a few days, and (b) have no osmoregulatory ability and a semi-permeable outer.
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Even my limited knowledge tells me a global flood would have changed the salinity, temperature and pH levels of most if not all fish habitats.
Some species of fish are robust while others are delicate. From my hobbiest youth, I know that many species of tropical fish - both fresh and saltwater - are highly sensitive to temperature and pH.
We don't see thresher sharks in Lake Tahoe, and we don't see brown trout in the South Pacific.
What effect would a global flood have on the world's fish species? I think it's safe to say that many varieties would have perished. Relying on scripture, Noah would have had to take these fish onto the ark, or we wouldn't see them today.
I'm interested in corrections/clarifications from biologists as well as explanations from creationists.
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