The African (angel I presume) and the Clown would be ok. I have a african and a Maroon Clown in my reef no problems. Now with A African even tho they are small all the books say they should be the last in as they can become nasty little buggers to new arrivals. So if you want more down the road then you might want to pass on that for now. Now I am not sure what you mean by saddleback unless you are reffering to the Butterfly called Saddleback (Chaeton ephippium; for our latin members). book says "may be intollerant of other members of its , or others, species. Also, states may be difficult to accustom to a succesful feeding pattern. Frankly the only 2 butterflies I have had luck with are the Racoon and Long Nose each of which I have had for 4 years now.
