That’s right, they do. One would assume that different breeds of fish fight when put together in a confined space. Perhaps they do not like the colour shade of the other fish they have to share their space with. Or they are just snooty. Or perhaps, one set just happens to be a cranky lot. Whatever the reason, not all is hunky dory in the calm surroundings. What spooked me was the same breed ganging up on a newcomer. The machinations of an enigin scam would pale into insignificance when compared to what happens in the confines of an aquarium.