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Hello Koi Enthusiasts!

This blog is here to provide a spot for various things that do or might pertain to Koi. This stuff is intended for your entertainment, and is not meant to meet the stricter standards of our ebooks and courses, so use this info carefully and at your own risk. The short articles here may be descriptions of techniques that have proved effective, an introduction to new fish research, facts, graphs or just something FUN about fish! This information can be a springboard for your imagination and an entertaining place to learn something new. Information that was first published in Question of the Week can be found here.

The more we learn about Koi, the more FUN this hobby is - and we always say - if you're not havin' FUN, you're not doin' it right!

A great overview of what feed ingredient alternatives are being researched as a substitute for costly fishmeal in fish feed. 
Discussion and research implications

Creative use of wasted flare gas to help grow microbes for fish feed. I wonder how this will look on a bag of fish food ingredients?
...The company plans to capture methane from flare gas in the oil-and-gas sector in Alberta and convert it on site into methanol. It will then be transported to a production facility where the methanol will feed and grow microbes in bioreactors.
...Later this month, the Center for Aquaculture Technology will test DeNova-treated pellets in adult Atlantic salmon completing a life-cycle evaluation of the fish.

Okay, now I am carefully looking out for red eyed carp.  Do you have one?  
The purpose of this study was to investigate the inheritance of red eyes in ornamental koi, a variant of Common Carp Cyprinus carpio. The study included crossing fish with different eye color phenotypes and analyzing fish segregations in progenies.
Gomelsky et al. 2016 NAJA 78 251-258.pdf (

A good basic read on KHV and how to recognize. 

Cat or bird, who do you suspect of this dastardly deed? 
Woman opens front door and finds goldfish flapping about on doorstep.
The fish was found out of water in Cheltenham., Glos on May 14 - and may have been dropped by a cheeky cat that nicked it from a pond.
RSPCA inspector Richard Carr said: “This was not your usual type of animal rescue call. My first ever stray fish.

For our science minded friends!
...The study reveals the details of important nutrient exchanges between algae and bacteria. Such exchanges determine the functioning of microbial communities in the environment, relevant to climate change cycles and agricultural productivity. Microbial interactions within microbial communities are important on many levels, ranging from the ecology of aquatic and terrestrial food webs, to wastewater treatment. A key characteristic of the interactions within these communities is the exchange of nutrients between species.

Impress your guests with this cake as they gather round the pond!
A TikToker is racking up millions of views on a video showing how she turned a regular cake into an edible koi pond.
TikTok user @lovesicksami shared the video of her process on March 16. It had nearly 8 million views and more than 2 million likes at the time of writing, and other TikTokers in the comments were so in awe of the cake's beauty, they said they couldn't imagine eating it.

Both goldfish and catfish survived!  But did Stephen the goldfish, learn his lesson?
A goldfish has undergone surgery to fix his broken jaw using paperclips.
Stephen the greedy goldfish ran into trouble when he bit off more than he could chew attempting to eat a catfish.
Owner, Shona Hingston, from Northumberland, returned home to find Stephen in distress with only the catfish's tail sticking out of his mouth.

A very unigue carp indeed. 
An “extremely rare strain of carp,” a 13-pound mirror carp nicknamed tiger carp for its unique stripes, was the object of a bidding war recently among Britain fisheries, all vying to become the owner of the fish that is believed to be the first of its kind in the U.K.
‘Extremely rare’ fish sold at auction for $3,425 (

Okay, this is my idea of a dream home!
Combining neutral tones, natural materials, and indoor/outdoor living, Am House is a reprieve from the bustle of Ho Chi Minh City. Then the marketing director for a large corporation in Ho Chi Minh City, Vietnam was in search of a new home, he sought a place that woule be a respite away from the stress of work and city life. 
Am House by Creative Architects, Am Design Studio, and Time Architects - Dwell

Here is a great short article on that famous 226 year old koi named Hanako. 
A Japanese fish called Hanako is believed to be the longest living Koi fish ever recorded, having made it to the grand old age of 226 before her death in 1977.

The scarlet-coloured female was born in 1751 in the middle of the Tokugawa era in Japan.

Wouldn't this be fun on your sidewalk!
If you've wandered around San Francisco much, odds are you've seen a few fish on the ground.

Cyanobacteria May be coming soon to your pond, via the clouds!
Human health and ecosystems could be affected by microbes including cyanobacteria and algae that hitch rides in clouds and enter soil, lakes, oceans and other environments when it rains, according to a Rutgers co-authored study.

A sad reminder that ponds are dangerous places for young.  Children need supervision regardless of the season. 
The 10-year-old boy who died on Valentine's Day after falling through ice on a Tennessee pond was trying to save his sister, the family's pastor said.
Boy died trying to save his sister from frozen Tennessee pond, family pastor says (

 A great short review of pharmaceutical contamination on fish. Our waters are becoming polluted with human drugs and this study looked at the possible results. 
Fish species around the globe are at risk due to the ever-increasing levels of pharmaceutical contamination that is making its way into water systems, according to collaborative research conducted by The University of Western Australia, Monash University, the Swedish University of Agricultural Sciences, and New York University.

What a beautiful tradition. 
HANOI (Reuters) - Vietnamese kicked off preparations for the Lunar New Year festival on Thursday by releasing ornamental carp into rivers and lakes - an age-old ceremony held one week before the “Tet” holiday officially begins.The tradition stems from the fable of three “Kitchen Gods” who ride on the back of a carp before noon to meet a Jade Emperor, to whom they report the affairs of each household.

A great short article about carp/koi and their meanings and use in different countries. 

Some great ideas on plants to repel those nasty bugs without using chemicals that are potentually harmful to your koi. 

This factory is not far from where I live so I wanted to include this story. The feed industry is changing fast and bringing changes to the ingredients that consumers will see in fish feed.
JEROME, IDAHO — Scoular has given an official name to its upcoming barley protein concentrate (BCP) ingredient: Emerge™. Emerge will serve as a sustainable, traceable and non-GMO protein alternative for pet food and aquaculture manufacturers, and “the only barley-based protein for feed customers,” according to the company.

Wow, what a fun time these boys had.  
Adorable footage shows two youngsters splashing around in tiny pools filled with giant Koi Carp.
Fish breeder Worawut Chunkum, 42, put the ornamental fish in plastic blue tubs for their mid-year health check up on July 9.
His sons Taechin, 8, and Nischin, 4, climbed into the temporary homes with the fish, splashing around with them in Nan, Thailand.

The loving send off for a beloved koi. 
The ceremony for the majestic fish was held at Nottingham's Pet Crematorium in West Bridgford - with owner saying it was the first of its kind having previously held funerals for mice, rats, dogs, cats, and even tarantulas during lockdown.

The Koi Carp, which did not have a name, belonged to a man who had spent many hours looking after this "wonderful fish" at the Bestwood Park home he shared with his wife.

These poor koi did not stand a chance with these predators!
An otter with very expensive tastes was filmed eating more than £1,000 worth of koi fish from a garden pond.
The initial prime suspect had been a local heron before a CCTV camera captured the brazen otter in the act on Saturday.
Safety nets and protective wiring had just been installed over the pond in Edinburgh, but they proved no obstacle for the greedy animal.
Footage shows the otter chasing the fish at spectacular speeds, as an equally hungry fox watches from the edge.

A Koi Club contact from a monastery and the saving of a pond and its koi. 
Escondido — 

Depending where you live in the world, your pond will have different critters that can been seen if you look close.  Here are some from Britain.
Summer is a time to leave your pond and its wildlife in peace. However, by looking at your pond at night, you might be surprised at what creatures come out when the sun goes down.

The future of fish feed continues to evolve.  How will it change what we feed our koi?
Veterinarians from RUDN University have developed a way to increase the resistance of carp, the most common fish in fish farms, to the harmful effects of ammonia, which is found in almost all water bodies. The researchers found that the amino acid arginine added to fish food can be helpful. The results are published in the journal Aquaculture.


!If you're not havin' FUN, you're not doin' it right


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