Stocking - how many gallons PER Angel?

In a 55 that is dedicated to angels, I would recommend at least 6 of more or less equal size. The reason being is that with lesser numbers, there tends to be a lot more aggression. When the numbers get higher, things equal out and they aren't nearly as aggressive to each other - I've done this a lot - works with discus too. With only three, the most dominate one will be able to bully the other two, but with six, the most dominate can't keep up with bullying everyone!

Use some high driftwood, or plants to break up territories and give them a places to swim to if they are being chased by someone else.

If two pair up, they'll pick an area of the tank and defend it, but not to the death .

I've bred angels for 15 years.

Here is one of the best angel breeders in in the country, look at what he has to say about stocking levels: http://www.angelsplus.com/Care.htm

hth,
joefish

the general rule is calculate for adult anges..that being said..the general rule is 10 gals per angel. with the tank size being a minimum 20 tall(for breeders) 29 is my preference.

in a 55 you could go with 6-8 juveniles but have a tank or two ready in the event of pairs forming or an occassional dominant male(will terrorize allthe other males)

the rules are a bit different for 'wild' angels. I am finding resources which recommend larger tanks for wild scalare..the peruvian need even more space as males will quarrel ..

for a 55 gallon most angel expert breeders would say no more than 20 full grown anges in a 50 gallon tank.

I'm agreeing with Rbishop and star...10-15 gallon per ADULT angel. Of course if they are juvies more for grow out.

"55 gallon most angel expert breeders would say no more than 20 full grown anges in a 50 gallon tank." Wow I wouldn't put 20 full grown angels in my 125!! What a massive bioload for a 55!!!