alright, well after school I went and picked up an ocellaris clownfish. I drip acclimated it in a bucket for about an hour or a little more, I know I could have dripped it a little longer but I got impatient. I released him into the tank and he's now been in there for almost two hours and so far, there has been no aggression shown between the two. It may take time but so far so good. The yellow tail blue damsel is about 1.5 inches long and the clown is I would say a bit over 2 inches long. I think I got a good deal on the clown because I've seen them at around $20 but I only paid $13 : ). Tonight I will feed them and I will see if the clown eats.