It's just baby fat or maybe over feeding or over eating
The Chinese developed the goldfish. Koi were developed in Japan. So the answer is no.
Koi are egg layers/scatterers of adhesive eggs so they don't actually 'have babies'.
koi is scale becomes red when the koi is breath some carbon dioxide and hipothetic acid so it affects the scale
Koi (the fish name, meaning carp) sounds like the word for "fancy" or "love". In Japanese characters, Koi is "恋".
Oranges and reds are common koi colors. But these days, koi really run the spectrum, so nothing is unheard of.
No the koi and the red fantails tails have a difference with the tails, the red fantail is bubbly and the koi is straight so the koi will get more food and will pick on your other red fantails
I think so
These nut are why
Turtles are in fact herbivores and carnivores so they can possibly feed on koi fish
Koi are a large growing fish (I've seen them at over 50cm long) and so they require a pond not an aquarium. They are also quite expensive. Koi are not for the beginner.
If it is true that all carp are fish (yes, they are, so A=B) AND if it is true that all koi are carp (yes, they are, so C=A) THEN Are all koi are fish (C=B)? If A=B and C=A, does C=B? Yes, C=B meaning all koi are fish. Your argument is solid, valid, sound, and correct. they are bad
Your koi may be getting fat due to overfeeding, as they can easily consume more food than necessary, especially in warmer weather when their metabolism increases. Additionally, a lack of exercise, such as limited swimming space or stagnant water, can contribute to weight gain. Poor water quality or an imbalanced diet lacking essential nutrients can also lead to obesity in koi. It's essential to monitor their feeding habits and ensure a balanced diet to maintain their health.