Nic;849929; said:if they are clear I think he is refering to ghost shrimps or glass shrimps I have also seen them called them
DavidW;851529; said:suddenly raising the front of the disc margin and raising/hollowing its body creates a water pressure difference which sucks the fish and surrounding water under the ray , then the ray manoevers the fish into its mouth. You will know how good a ray is at creating a vacuum if you have ever tried to pry one of your tank glass when it didn't want to move