Those of you that have touched a Koi against the side with a net will recall that it will bend into a C-shape and dart away at roughly 90 degrees.
Carp have a preferred body temperature (PBT) of 22 to 28 degrees Celsius.
The swim-bladder, also known as an air bladder, is an air-filled sac situated just under the backbone at the top of the abdominal cavity.
Dr Paula Reynolds describes it very eloquently, in Koi-Carp Magazine, August 2000. "The outermost body protection for koi is the mucus coating which forms a layer known as the cuticle.
For 25 years a Japanese diver has been friends with a particular fish – and this is for real and not a fairytale.
Stress has all sorts of consequences for fish, some of which we are just beginning to understand.
If you are one of the millions of proud owners of freshwater angelfish, you might be surprised to find out how simple it can be to calm the often feisty fish: Change their water less often.
If they weren't in the windowless basement of a cavernous biomedical research building, the "Aquatic Suites" might sound like a cushy vacation destination.
The evolution of land animals only happened once, some 400 million years ago. But what pressures pushed sea creatures to evolve limbs for walking? Scientists have proposed several theories, including fish that adapted to living in shallow, plant-choked streams prone to flooding and drought. Now, new research suggests that that strong ocean tides may have played a significant role, stranding animals in tidal pools and giving them an incentive to escape back to the sea.
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