Sounds like my old 55 hex, including the visibility lolHad large angelfish in a tall broad hexagonal tank. There was tall rocks and room to forage below the rocks, and they can swim around inside the broad depths . It was so thick you really could not see the far wall very well. Fish seemed happy and bred and had babies in that tank.
The tank is since retired, due to poor viewing through scratched acrylic walls. Was purchased that way. Got worse. Fish now in rectangular tank with round corners.