The most fascinating thing about the koi

is that if you keep it in a small fish bowl

it will only grow to be two or three inches long.

Place the koi in a larger tank or small pond

and it will reach six to ten inches.



Put it in a large pond and it may get as long as a foot and a half.

However, when place in a huge lake where it can really stretch out,

it has the potential to reach sizes up to three feet.

Yea, it is the same with crocodiles. I believe humans are also the same in a sense...