Hi, so I have a 10g saltwater aquarium with a 35g Tidal HOB filter it also has a ricordea in it. I have had a gladiator clownfish and a tailspot blenny in the tank for a little over a year I believe, I added a sea urchin about a three months ago and just added a Cherub anglefish as he is the size of a quarter. However my clownfish keeps chasing the cherub I've only had the cherub for almost a week so I think this is normal but he is doing it 24/7. Is this to much to have in my ten gallon tank? Should I take the Cherub anglefish back? I also do water changes every two weeks. I will be testing water again tom. as I test water once a week.