Keeping Multiple Black Ghost Knife Fish

[whysoez]

I keep 5 bgks with 3 clown loaches now. they are so peaceful, i keep them in 132 gal aquarium. sorry not all my bgks shown in pic, after i turn the light on, they will hide.

Spoiler: pic

 

[Tom the bomb]

Ghost knives are my favorite knives.

I have a single black ghost knife in 100gal. I'm tempted to get another. Black ghosts are my favorite too but I also love glass knives try out those. If multiple will fight, then ill get a glass knife

 

[Andyroo]

Serpentine , do you expect renewed agression when you move them (to the bigger tank)?
IE: when they'll be finding new homes & resetting territories?

700gal is a lot of space, but more generally, though - is this an issue/expectation? Is it best to leave them be through their lifetime if keeping a group?