<a href=showthread.php?s=&postid=12489848#post12489848 target=_blank>Originally posted</a> by PRINCE_NAMOR
Do you have any trouble with the tangs fighting? I want several different tangs, but every article i see on line says you shouldnt put similar fish in the same tank.
Interesting question, this is a touchy subject for me, as I was kicked of another site because of my opinion on this very issue. So here's my long winded answer.
As long as you keep tangs well fed, you will minimize there territorial behaviour. Traditionally reefers restrict food in favour of optimum water quality, and as such the fish become competetive for food. If you provide plenty of food then there's no reason to compete and risk injury. It's simply not worth it.
Really there are only 3 things that make an organism territorial:
1)competition for food
2)competition for mates
3)protecting young offspring
In the tangs case:
1) Lots of food means no reason to expend the energy to compete.
2) Tangs reproduce by releasing millions of gametes into the water column at the same time and rely on random interaction to produce larvae. Tangs are also not sexually dimorphic (you cant tell one sex from another). Sexual dimorphisim is a trait of animals that compete for mates. The male is usually larger or more colourful to fight and compete for females. Since tangs dont need to compete, there's no need to look different then the opposite sex.
3) Tangs don't rear their young, so there's no reason to guard a territory
In the wild the real competition is for food, a shortage of food makes it worth while to risk injury to guard your territory and the food it produces. The same happens to people in times of crisis when food and water are in need.
Everybody who sees my tank asks how I'm able to get my tangs to grow so large. I believe the reason is if the fish doesn't have to expend energy competing, it will put the energy towards increasing biomass.
I believe the same applies to corals. If you feed your corals, they will be less competetive with each other and spend less energy in biowarfare. If filter food is provided there's no need to spend the energy to compete for space and sunlight. They will then spend more energy on growth.