Infinite water when trying to catch axolotl in bucket.

I just play on my world. And mine iron and resources. After I found axolotl and craft iron bucket then I try to catch him it was baby and grown axolotles I many times click on water trying to catch axolotl (baby) and... I found new infinity water because after clicking ZL button on baby axolotl he didn't catches. He just stay swim and I have a bucket of water block of water was not full it was half but I already have full bucket of water sorry for broken English I am from Russia