07-23-2014, 07:54 AM
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I disagree with tankman and would only do a harem in a 55+. That extra 10 gallons makes A LOT of difference. I don't feel you would be overstocking in a 50 gallon upping your cory school to eight, pop. Just because a fish is social doesn't always mean it is necessary or should be done in an improper tank size. With the exception of pygmy gouramis which can be housed together in a 20L, gourami shouldn't be mixed in under a 55 gallon tank. Pop, if you have a harem and it is working, that's fine but a majority of the time this is not the case, ESPECIALLY if you already have one of the fish and will add more of it's kind. These fish ARE territorial and WILL kill eachother. Also, keeping 2m/1f, the males will likely die first as they will be driven to stake out their territory before they even think about mating.