Best answer
36 inches
People also ask
Do koi fish grow big?
One popular myth about koi fish is that they will only grow as large as their aquarium (or pond) allows them to grow. This myth doesn stand on any solid arguments but stems from the fact that, in a way, tank size does influence a koi fish growth.
What is the biggest koi fish in history?
Big Girl is the biggest recorded koi fish in history. In 2007 she weighed 90 pounds. She was three times larger than any adult koi back than and now. Her owner purchased him from a Japanese breeder when she was seventeen years old. At this age, she was 40 inches long. That means it is twice of a normal big size koi.
How big does a butterfly koi get?
Butterfly koi, longfin koi, or dragon carp can grow as long as 36 to 40 inches in length. But the most common size you will see is 24 inches. Weight of an adult butterfly koi ranges from 12 to 16 pounds.
What is the perfect Koi tank size?
The perfect tank size will depend on the variety of koi you own (domestic, Japanese, jumbo-sized, etc.), their age, whether they檙e long-finned or short-finned, etc. You can use the GPK (gallons per koi) scale to get an idea of what tank size would give your koi the best environment to grow into its maximum size: