My husband is ranked as an Advanced Breeder. In his aquarium association.
We actually don't have an aquarium. We have an eco-system. The Advanced Breeder has it heavily populated with females, and the estrogen-driven aggression is surprising (or not.) He apparently learns a lot about how to be married to a Jersey Girl from the behavior of his fish.
Frighteningly, much of it is accurate.
Here are the Evil Angel Fish. They think I am too slow with the food. They glare.
They give me nightmares: