02-05-2014, 10:32 PM
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Gourami can be really tricky fish, as they often 'change their minds'. One moment everything looks fine, and the next you have a dead fish. Unless you have the resources to give each fish it's own tank should something go awry, I wouldn't get more than one.
I had 3 Pearl (supposedly one of the most docile gourami, second to Honeys) youngsters in a 38 gallon, and the male was relentless in chasing them. I switched out males, and still had issues with him being constantly harassing them, even with tons of hiding places.
So I nixed the male. And then the females fought, and fought, and one eventually almost killed the other. I ended up just returning them both and sticking with schooling fish.
So yeah. DGs are notorious for being aggressive, and sure, some people have house multiples together. But I'd say the risk of them fighting is too high to take unless you have another tank one could go into.