Unfortunately my friend sold out years ago, and relocated. He had that tank (500 gallon) another 550 gallon filled with Asian aros etc, and numerous 120's with juvenile aros that he imported from Singapore, and black rays from a breeder in the Netherlands, for resale here in Canada. His aros & rays ate a mixed bag of pellets, market prawn, freeze dried krill, salmon, etc.Awesome Chili Red(?) Neil (and the rays aren't too shabby either, thanks for sharing. I wonder what your buddy feeds that beauty?