I was wondering what the best species of ray would be for a 120g (48"' x 24"x 24"). I was looking at the hysterix but i wanted some more input. It would be in this tank for 3-5 years, until i can find room for and afford a larger system.
Histrix grow slow. A couple of 4" rays could last up to two years in there. I have a large pair in a 180 and another large trio in a 220. Both have the 6' x 2' footprint.