How big is your tank, suggest you readm more abt them before keeping one. Yes they are superb algae remover and will quickly wipe out the algae population in your tank especially if its a small one. After wiping out, it will only want to continue to eat algae and nothing else thus starve themselves to death...... Read more about them as i hate to see another algae blenny being starve to deatn due to rejection for eating.