T_in_PA2 that is what we call sting rays down home and are the kind we eat, the cow nosed ray I am talking about is sandy colored on the top, here is a link to what I am talking about
http://octopus.gma.org/fogm/Rhinoptera_bonasus.htm they do not have a real pic of one, but the drawing is what I am talking about and they describe it's color as sandy brown on top, white on the bottom.