I bought to large kissing gouramis today both are about six inches. I wanted to buy just one but they were only being sold as a pair because the women working said that they " have been together for so long" since I brought them home this morning they have adjusted fine but stay together , the larger on keeps nudging the smaller one and then will wrap it's body around the fish untill the smaller on is upside down then will release it? could they be trying to breed already and is this breeding behaviour?