Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.
They are vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism.
D maybe?
Depends on the behaviour :/ ah idk <span />
They would reproduce asexually
They live off of the blood of another fish, they must have a host, so that makes these fish parasitic.