Green Trachy Open Brain Sm/MdTrachyphyllia sp. Brains are found in shallow waters attached to a small piece of shell or rubble sitting on sandy substrates. They should be kept under medium to high lighting and medium flow. They prefer to be on the substrate but we have seen them placed on rock work successfully. These come in an assortment of shades. You will receive the best colony we have in stock, at this price point. If you require a WYSIWYG piece please check out our WYSIWYG