Tomini tang for me even though I only have 3 fish due to losing a few fish over the last 4 years due to age and one jumper. He doesn't mess with them to much in a 90 gallon did it in my old tank. Bought 6 new fish in qt will see what happens after they finish their copper treatment. His nickname is Chester the molester because he used to chase my blenny before he passed of old age.