blove wrote:

it is off topic because bettas are tropical fish but i think it is
just because the tv emits heat and that will heat up the tank
significantly wich will stress the fish out also im sure the tv
vibrates because of the speakers and that will stress the fish out
too.

I worry about the vibrations. If the speakers are separate from the TV
proper you're probably OK.

Bettas like their water about 80 deg F. So significantly warmer than
room temp is OK... IFF you keep it stable. Most betta tanks are too
small to be thermally stable...

-D
--
"Faced with the choice between changing one's mind and proving
that there is no need to do so, almost everyone gets busy on the
proof." -Galbraith's Law