Miniatus was the one I found too.. As for sharks and rays, I was looking at aquacon and this paragraph is what caught my attention.
Sharks and Rays can both be fun additions to an aquarium that is large enough to suit the particular species (minimum size 180 gallons for the smaller or less active species), and that provides the right environment.Most Sharks and Rays are large meat eaters that require large aquariums. Most grow to a minimum of 36 inches and require a minimum 180 gallon aquarium. Many sharks, like the leopard shark, shown above, can grow up to 6.5 ft. long and require a minimum 400 gallon tank. The smallest Sharks and Rays that we have found are: Marbled Cat Shark, Atelomycterus macleayi: 60 cm (24") ; Horned Shark, Heterodontus francisci: 96 cm (38") ; Brownbanded Bamboo Shark, Chiloscyllium punctatum: 100 cm (40") ; California Stingray or Round Stingray, Urobatis halleri, 26 cm (10.") ; Blue Spotted Stingray, Taeniura lymma: 25 cm (10") without the tail.
Is the general census that the smaller shark they mention at 24" and the rays at 10" not suitable for my 210? I'm not trying to force anything. I want to provide a good habitat and I'm completely willing to nix the sharks and rays idea if I have to.