sorry no thead referance but i remember when i first got into rays i saw pats setup witch was two 480's side by side full of adult motoros and a huge silver aro and really big bala sharks never seen rays this size in captivity simply awsome. the second setup was darin's i think it was a 800 gal koi pond he had a impresive variaty of rays best flower i have ever seen, hawaiian ray and some other rays i will never forget these two set ups may be not as nice as others here but pretty awsome to see back then.