Wow.... That's all I can say.
I wouldn't ever feed clowns to other fish. Pretty much for the same reason I don't eat venison (deer meat, not sure if I spelled venison right), it's just not on the menu for me. But honestly as a person who plans to breed clown fish, I don't care if the people who buy them plan on drying them out and making earings out of them. I think its sick, but once they are out of my "buckets", it's not my decision, and unlike most people here, I just don't feel like it's my business.
I have only had my 150 for about 9 months like I said. I had 2 nanos for about a year prior to that, and we've had a tank in our office at work for as long as I can remember. Which as the owner of the company, I really didn't take care of it. I did add all the clown fish though

. It has the largest clarki I've ever seen in it. I'm sure they get bigger, but I just havent seen them. I guess what I'm saying is although, I'm not a 20 year vet, I don't feel as though I'm "new" to the hobby either. I understand, some of you will argue that to the death, but again, it's my opinion. don't know if it would hold up in court.
Now the science......
FISH DO NOT FEEL PAIN!
FISH DO NOT EXPERIENCE EMOTION!
Fish are the most primitive creatures that most of us will ever come into contact with. They do not suffer. They don't feel pain. They don't feel aggression. They don't "feel" anything.
That is not a guess. That's science. Their brains do not have a "developed" cerebral cortex. As a matter of fact, you can remove the entire brain of a fish leaving only the brain stem and spinal cord, and it would live quite normal. They understand SURVIVAL. Eat to live. Live to mate. That's it.
That being said.... I AM MAKING A PRETTY BOX FULL OF SALT WATER AND MINDLESS FISH FOR MY OWN ENJOYMENT. It's sad to me that anyone here can't admit the same thing.
I don't have any false perceptions that I am furthing the science of home aquatics, or that because I have 20 clown fish, 18 people will have to do without them. I just dont understand why you do.
My answer is still the same. If you want to buy 300 clown fish and put them in a 5 gallon nano, it's your money. I would actually go one step further and say learn to breed them so you can propogate your own. Your home aquarium is limited only to the lenth, depth, width, and capacity of your WALLET (and your imagination).