Not True!
I have 2 ATF at one point, one got killed and ate by my ST, and I traded the other ATF for a high compact fluroscent light
The tat died, because it got into a fight with my silver dollar ... and during his recovery in the hospital tank, somehow he passed away
The pink convict and the asian red tail cat I gave it away to a person with a larger setup and space. The convict constantly picking on my other fish's eye and the red tail cat just punk everyone up...
The pacu that I got mixed up with a silver dollar identity, I took it back to the pet shop
The tropheus duboisi, I traded for some long fin albino bushnose pleco
and the rest of the African cichlid, I took them back to the shop's tank

so not every fish turns out dead ^^
~~~~~~~ Sorry for derailing ~ but some people wants to know what happen
As for this scomb/armatus fish, my uncle got a pond that I can fit them into... if they are armatus
and
I am leaning toward as an armatus
BECAUSE
the fish in my lfs are twice the size that I once saw them 1 and a half weeks ago