If you can smell the fish pond standing in front of your house, then your feng shui
Will be affected.
As for the shape of the fish pond you mentioned, it doesn't matter.
Many fish ponds stopped at a small piece by the river, which was neither square nor round.
They are still well raised. Shape has nothing to do with feng shui.
If it is a road or a big river, it is a semicircle towards your home and away from it.
It is close, so it will affect Feng Shui.