You are assigned a research project on a parasitic species. You choose the sea lamprey (Petromyzon marinus), You discover that juvenile sea lampreys attach themselves to the outside of fish and 'rasp' away the scalesand skin in order to obtain nutrition from the fish's bodily fluids. You are suprised to find out that sea lampreys can feed on more than ten different fish species from several families. You also learn that adult lampreys die after spawning whileeggs hatch into a nonparasitic larvae that inhabit small sand burrows in stream beds. Based on all these findings, what terms would you use in your research report to describe the sea lamprey