Jack dempsey aggression

[lekkiandgas]

have you seen the size of a jd mouth just gapes open and they have little teeth lol

 

[Loganh11]

That's

I believe its all about tank size, if you stick them in a puddle, there's bound to be conflict.
When I have snorkeled with them in their natural habitat, I have not witnessed any aggression all. except when defending a spawning site. In fact I see them shoaling together, with live bearers, and even rhamdia catfish.
I took this video in the Eden cenote in the Yucatan

That video is absolutely amazing! Thanks for the video, and the advice!