I was surprised when adding my final fish to my community aquarium that my Fire Red Agassizii took an instant dislike. Its a small young Pearl Gourami maybe 3 inches. The Cacatuoides swims right past and doesnt even seem to notice the Gourami. However, when the Agassizii spots him he chases him until he hides behind the internal filter. Tank is heavily planted so it is not constant aggression. I had thought that with the Gourami likely to spend a lot of time up amongst the floating plant that there would be no problem. Now, however, the agassizii is up in the floating plants too. I hadnt found any articles to suggest there would be problems. Its a 200 litre, 1 metre tank. Any thoughts? Its only the first day so i'm hoping it calms down.