So a couple months back my male clownfish disappeared and left my female all alone! luckily there were no children for him to swim out on. Im wanting to add two new davinci clowns to the tank. Would three survive in a 150? If not, how much smaller should the new clownfish be compared to the female already in there? I would prefer two new davincis but im not going to kick the old female to the curb, so I will only add one new one if possible. Thank you