What's the most foul tempered fish you've ever had?

[BillyinPA]

My Trimac Big Mack is a monster. He has a long list of victims. Currently He has a female in there with him but I need to keep a divider handy when he goes postal.

 

[troublesum]

My big Female Festae has killed 4 males that were her size maybe a little bit smaller but she only kills at night when the lights go out and she is relentless all i hear is splashing then in the morning i find a male dead and her hiding in her pot acting scared as soon as the lights come on she comes out and swims like nothing happened