A friend of mine just got a pair of gouramis for his 10 gallon. one keeps chasing the other around, not really doing any damage but the one being chased is obviously stressed. I dont have any experience with these so i'm not sure what to tell him, which is why i'm checking here. I read that the need lots of hiding places and there arn't many in that tank. would adding lots more fake plants and caves and such fix the problem or should he just bring back one of them?