I know they do tend to get aggressive, however, the four gourami I have get along great together and are not aggressive towards each other whatsoever, even though they are all female. I’m assuming it’s because a have a very large female, but I’m not sure. No need to rehome any of them.I wouldn't add anymore, if I recall correctly (I very well may be mistaken) blue gourami get aggressive with their own kind in smaller tanks. Plus they get to be a decent size each. I do know the males tend to fight so if you have multiple males I'd look into rehoming some of the ones you have.
Have you considered stocking another school of fish or something instead?
Hello Matt...Hey all! I currently have 4 blue gourami and 1 red tail shark in my 45 gallon aquarium. How many more gourami, if any could I add?
Im not really a first timer. I’ve been fish keeping for about 5 years, and I have two tanks. As for the shark, it has been wonderful for the year that I’ve had it. No aggression that I’ve noticed.