keeping multiple Gencanthus genius angelfish in the same tank?

[Moonstream]

I have a very healthy female swollowtail angel (G. melanospilus) and I have been thinking about maybe getting a female Lamerak or Wantanabi angel, and I was wondering if they would get along? I dont want any aggression, but I dont have enough room for two tanks big enough to hold them.

my tank is 75g and has TONS of open swimming space.

 

[flameangel88]

Yes, you can but most of them can grow to 6-7".

and read this thrd:
For the love of Genicanthus

 

[jda]

I have done it too. Those are all females above, but I have kept males in with males and they don't seem to care. They are slow growers and you could get a good amount of time of enjoyment out of them before they outgrow your 75G, but they will get too big eventually.

 

[fittiger]

<a href=showthread.php?s=&postid=12733312#post12733312 target=_blank>Originally posted</a> by flameangel88
Yes, you can but most of them can grow to 6-7".

and read this thrd:
For the love of Genicanthus

I love that tank/livestock selection. How big is it?

 

[BangkokMatt]

I have an established pair of melanospilus and I added a female watanabei. There was major aggression and the female melanospilus killed her. So...in my experience it is a very bad idea.

 

[Gwynhidwy]

I have a trio of G. watanabeis (two females, one male) with two female G. melanospilos with no problems. However, all were added to the tank at the same time, a 155G. The melanospilos are about half the size of the watanabeis in length.

As BangkokMatt said, it doesn't always go that well and I would expect that it would not in a much smaller tank. I have heard bad experiences from others as well. Also, I have noticed that occasionally the female watanabeis display some aggressive behavior towards the melanospilos and the male watanabei intervenes, effectively stopping any aggression.

 

[triggerfish1976]

As I have said in previous posts, keeping Geni's in groups is just as unpredictable as trying to keep other angels in reef tanks with coral.
Some will do fine together but the odds are against you.
I have kept every "available" geni angel in pairs, harems, etc. and I had mixed experiences but generally I have found that males will fight with each other especially in a smaller tank and the males can also be very rough on the females.
Multiple females can be done but like Anthias they like to change sexes rather abruptly and you can easily end up with two males out of a harem which can lead to problems.
I would recommend one large male and a small female. I have found that having a larger female can sometimes prompt her to change into male regardless of the presence of another smaller male.
A friend of mine had a large female Bellus Angel and later introduced a smaller male. The larger female immediately started bullying the new male and she changed into a male within a month. The smaller male then changed into a female.
There is some conjecture that the color changes do not mean that the fish is also instantly changing sexes which I tend to agree but I think it does complete the change if it doesn't change back over time.

 

[flameangel88]

<a href=showthread.php?s=&postid=12733761#post12733761 target=_blank>Originally posted</a> by fittiger
I love that tank/livestock selection. How big is it?

Thanks. The tank is 180g.