Research & Technology - Technology & Research from or relating to Koi/Fish, Tools Used

Great work on memory of goldfish. We know our koi can do even better.  
 
"It’s long been a common belief that fish have the memory capacity of only a few seconds. People often make fun of people with bad short-term memory by saying they have the “memory of a goldfish.”
 

Now this is interesting; do our koi do the same? 
 
A team of researchers at the University of Oxford has found via experimentation that goldfish use markings on the floor below them to measure how far they have traveled. The findings are published in Proceedings of the Royal Society B.
 
https://phys.org/news/2022-10-goldfish-distance-memory.html

Koi seem to have their own way of swimming as studied and described in this research by Wu, Yang and Zeng.  If you are into kinematics and hydrodynamics this is the reseach paper for you.
 

This reseach gives "frozen fish" a whole new meaning.  My wonder is if the Crucian Carp's cousin the koi is able to revive the same? For those loving a scientific article, you will love this. 
 
Crucian carp (Carassius carassius) survive without oxygen for several months, but it is unknown whether they are able to protect themselves from cell death normally caused by the absence, and particularly return, of oxygen....
 

This young man is not only a brilliant scientist with an amazing future ahead of him, but we at Koi Organization International (K.O.I.) are proud to call him one of our own. Indeever congratulations on your significant contribution to fish science and adding the knowledge of the genome of angelfish.  But we also appreciate that you are a Certified Koi Keeper (CKK) with Koi Organization International. We at K.O.I. look forward to continuing to highlight your future scientific work. 
 

Wow, I never knew.  This is a great article, and for the more science minded, read the entire research paper.  Both article and research links provided below. 
 
"Every winter, the northern European crucian carp gets frozen into the ice, and receives no oxygen. Every spring, when the ice melts, a seeming miracle occurs: the fish emerges from the ice and resumes normal life....

 

Raising koi is an industry that is growing across the world; a growing international trade bringing income to many in a variety of countries. Here is a study from Java, in southeast Asia, that looks at the results of current techniques used to grow koi in Java. Even down to keeping the snakes and frogs out of the ponds. 
 
 

This is a historical view of the domestication of fish.  Tilapia and carp are the first know domesticated fish dating back to 1500 B.C. Section 2.1 deals directly with the domestication of the carp.  
 

Even if you don't like research on koi, you will love this short, but very heartwarming research proving what every koi hobbyist has always known; we do build relationships with our beloved koi. Now proven through a scientific structured study, koi have personalities and indeed seek out voluntary relationships with their keepers. Though scientists have focused for centuries on the relationships between humans and mammals (especially captive mammals) this is likely the first fully scientific study in our hobby on relationship building between humans and koi.  Enjoy. 
 

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