How many angels in a 55?

The inch per gallon guideline is absolute garbage. Your 55g can fit about 6 angelfish just fine although of course, you need a backup tank since angelfish will readily pair up as they mature and can bring problems to the community in the process.
 
That tank will easily fit 6 adults permanently. If you are growing them out on a temporary basis it can fit many more.
 
One CUBIC inch per gallon. An angel is round, so I guess you could do six, though once they pair you might have problems
 
One CUBIC inch per gallon. An angel is round, so I guess you could do six, though once they pair you might have problems


Question: How many adult angels could you house in a 20L?

Answer: Zero

Question: How many adult angels could you house in a 20H?

Answer: Two

It doesn't matter if it is cubic inches or linear inches of the fish, both "rules" are worthless.
 
5 or 6 juvies. Once they pair, 4 (two pair). ONLY if there are no other mid or upper level swimmers in the tank that you don't want to be food. If you have other fish that you want to share the same level and not be killed, I would only keep one pair. Two pair will split your tank in half. Again, as juvies, 5 or 6.
 
One adult angel for every 10 gallons of tank size is as good a rule as any and better than most. In a 75g tank I back that off to six veiled fish and it works well.
 
I think you have your answer.

;)

unfortunately, angels are difficult to sex. otherwise you could probably keep 5-6 adult females in a 55. the same cannot be said of the males.
 
I really don't reccomend trying to have three pair, or two pair plus one in a 55. I pretty much guarantee, there will be a lot of fighting. It depends on the individual fish, you might be able to pull it off, but I think it's a bad idea.


*edit - I am thinking of a 55 tall. If your 55 is 48" long, you could probably keep 3 pair with out much fighting.
 
The inch per gallon guideline is absolute garbage. Your 55g can fit about 6 angelfish just fine although of course, you need a backup tank since angelfish will readily pair up as they mature and can bring problems to the community in the process.
:iagree:. i hate that rule with a passion:swear: it literally makes no sense.
 
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