Put simply the difference between jumbo koi and regular koi are their size. Jumbo Koi generally have larger muscle mass. To increase muscle mass you would do resistance training coupled with a high protein diet. A fish version of resistance training would be swimming against water flow. To achieve water flow you would purchase a water pump and put it in the tank. Now the fish have to use their muscles to fight against the current which would cause muscle breakdown. Then you feed them a high protein diet so that their muscles can grow back bigger and stronger. Studies show that fasting fish increases growth hormone production in fish. Growth hormone especially in their juvenile stage should help them grow bigger bones right? Also with swimming against the water flow it should help them build bone density too right? What do you guys think about this method I just created? I can’t afford a jumbo koi I’m, so broke 😭.

This is the test that i took from my pond. Can anyone help me on what i should do next????

I've had 3 koi fish for almost a year and they've been good in a 30g tank. Today I noticed one was biting and messing up one of the koi's fins so l removed him. Now there's 2 but the other koi started to bite his fins off too so l had no choice to remove him too. Does anyone know why they became aggressive or has this happened to anyone else? They were not like this until today. I put a picture of the other koi's are vs how they left him

Hi everyone. Recently my father has gone on a 3 month trip to Asia and left his koi’s in his pond in the care of me and my family. All we normally do is feed them at their specific times. We used to have about 14 koi’s in our pond out front and have had them for a few years now (i wanna say about maybe 5 years I’m not too sure). Before he left he did a cleaning of the pond (changing the water and also the filters). I wanna say in the past 3 weeks or so we have lost 5 of them. Attached to this post is gonna be a picture of one of the koi’s that died today. I’m here to ask if anyone can help me. P.S: i live in brooklyn and the weather has been changing up and down so thats what i believed killed 5 koi’s but now I’m not sure.

I have a 35 gallon tank. currently building a large 13,000 gallon pond .Was wondering whether I could fit a baby koi in my tank for now. Expected to finish in 2 months.

Before the water was pretty murky and the koi would lay at the bottom of the tank motionless unless I touched it. I’ve now fixed the water quality and salted the water to help cure the koi’s sickness. Is the skin peeling because of the salt or is it because of the dirty water from before? What should I do to heal the fish?

Hey everyone. I am pretty new to koi and need some help. I am moving from Fort Lauderdale to Atlanta in a few weeks and need advice for transportation. Any suggestions and links would be greatly appreciated! I have 9 koi not sure the types. 5 of them were born in my pond and are approximately 6-7 months old

I am looking for discounted places to buy Koi. Is there any direct from Japan or overseas hook ups?

The PH on my pond keeps falling to near 6.2 which is slightly acidic and not favourable for koi. I do a 10-15% water change every week and I also add baking soda to increase the PH. It increases temporarily but again falls back down.