Fishing
A gold pool is where you're going to go fishing. Because, if the pool is gold, hopefully the fish are too.
Imagine yourself fishing in a gold pool, catching golden fish. What a great fishing spot this is.
ちょう
つ
None
You caught a couple of gold fish. Two (つ) gold fish, actually!
Count your golden fish. They're so nice! They're also worth their weight in gold, because, well, they are gold.