Conflicting info on geophagus brasiliensis

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Not sure I'd put them at Amphilophus level ... but I did have one that killed a Green Terror that was nearly double the brasiliensis' size.

So killing a green terror twice its size doesn't quite make amphilophus? Lol

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Green Terrors (saum style) are fairly over rated in terms of aggression, so yes. I don't think any of us would put them in the Amphilophus range. "To be the man, you have to beat the man."
 
I don't see them being as aggressive as Amphs, but I would say that they don't belong with moderately peaceful SA fish. I had Red Bahias that were pushy with much larger severums and Geos when they were only 3 - 4" fish, so eventually I rehomed them.

I would not keep two together in a 75. Chances are you'll have conspecific aggression issues with them unless you end up with a pair, and at that point I'd be concerned with the other fish in the tank. One thing about the brasiliensis complex is that they will spawn very young and small. I had fry from 2.5" females that were only about 6 months old.
 
I have a 6" female brasiliensis in a 120 gallon along with Australoheros 'red ceibal' and there have been no problems. I've also kept it with Gymnos for a while, and again no problem. Mine is pretty mellow - maybe I just lucked out (or have just kept it with smaller, non-threatening tankmates).

2012 (1.5")
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2014 (6-7")
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2012 06_08 copy.JPG

2014 04_01 copy.jpg
 
I just got rid of my bras. they were really aggressive. I had to put a 4" one with my 8" bass and snooks and the geo ran the tank. picked on everyone. I just saw a monster one at a local fish store. much bigger than a soft ball
 
Here is my male. What do you guys think this one is. I had a pair and they were pretty peaceful


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Very nice looking I am glad someone has one that isnt a killer :)

So last night I decided to keep the one I have and see what happens. I am not going to get the second. Right now it is the low man on the chain so if he keeps his place than I will keep him if he gets aggressive I will get rid of him seems like only time will tell with these guys. Right now I have a 4" Honduran Red Point in another tank that bosses around a 7" female Synspilium. The HRP is male and Syn is female so I guess that is why it works. But my HRPs and my Firemouths are my favorite so if anyone turns aggressive I will rehome. But it looks like I am now full capacity on all my tanks so I am done buying for a while.
 
They may at some point be moved a new genus.
They are very different from the Geophagus many aquarists keep, and being from southern Brazil, conditions are a bit different, as southern Brazil is more temperate, a bit cooler.
I kept the generic braziliensus in my pond in summer where temps would drop into the 60sF at night, and they bred like crazy.
And lately kept iporangensus in unheated tanks where they've also spawned.
Although i don't believe they need a cooling like Gymnogeophagus, I believe generally cool temps of low 70s/high 60s keep their aggression level down.
Although when spawning they will back down much larger fish.
 
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I have 2 brasilliensis in a grow out 90 community with chocolates as the top fish.they are just 4 inches.chocolates now about 6 inches.maybe helps these fish are growing out together.no real problems...the chocolates breed and usually are not very rough to the other fish.here are uploadfromtaptalk1414539546475.jpg2 pics from phone cam just nowuploadfromtaptalk1414539571102.jpg

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