Was There a Fishpond at Hill House?

Just on the edge of the parish, Hill House in Berkswell was a respectable residence. If you follow the bridle path past Hill House Farm there is an are of land which seems to me to be possibly the remains of fishponds as opposed to the many water filled remains of mineral extraction in the area.

Perhaps the present Hill House was built on the site of a manor house or a grange? I base my theory on what I have seen of sites that have been acknowledged as fish ponds by those more knowledgeable than I, that this site seems to resemble