Beautiful pond! I love the natural look. Your koi are beautiful- I love the shusui. That is one of my favorite varieties.
I try to keep my koi down to less than 10 adults for 2500 gallons but the darn things keep spawning, so I have to keep trying to catch babies which is really difficult. If I'd been able to tell (or choose) sex back when I bought them, I would have bought all females (I like their chunkier body shape), but oh well, LOL!
2500g koi pond, 300g frog/goldfish pond, 100g indoor "pond."
Helping my daughter with her 10g
56g angel tank