Markosaur said:
no offence but gravel and sand makes most fish happier and calm.
also remember that some fishes feed of bacteria and organisms that live in the gravel.
Ok your fish might not be stressed but that dosent mean that the rest of fishes around the world arent.
ive seen fish panic and die in such tanks(a friend of mine)
they advise sometimes against too light gravel. well just imagine how a bare bottom is. it reflects even more light.
and lol stingrays dont normally see the bottom lol.
but they do like to dig around and hide themselves
As she is demonstrating to you, fish can obviously acclimatize themselves to no substrate
So what if fish sometimes eat stuff on the gravel? So long as you put food in their tank, the fish are more than welcome to eat stuff from wherever they please rofl.
Just because your friend had no luck with keeping fish in a substrate-free environment doesn't mean other people can't, as Draco is showing.
uh, so what if it reflects more light? It doesnt look like Draco's fish are going blind from it lol
As you apparently didn't notice, Draco said gravel damages a ray's skin.
I really think you are being pretty close-minded about this