Mangrove jack

[Dluch]

Just wanted to know if its possible for a mangrove jack and a barramundi to live in the same tank together without killing eachother?

 

[fish_lad]

At under water world they have about 30 odd full grown barra and 1 massive jack in the same tank

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[badassmc]

Yeah dude it's possible. I just bought myself a jack that was living with a barra it's whole life in a 120 gallon tank. Who knows how they would go if they were a bit bigger though. I've heard that after a certain point jacks become too aggro to live with anything else

 

[Elbling0]

If you put them together, expect at some point for the Jack to kill the Barra. I think somewhere along the line of 20,000 years of evolution something has royally pissed this fish off.
Jacks can be housed with other fish until they hit about 12''+ then you're treasured fish will either get beaten the **** out of and left for dead while you're not looking, or eaten.
I love Jacks.