can i capture other fire ants and...

[XxStrongHeroxX]

can i capture other fire ants and put them into another nest i have and they join that colony

[Fulkol]

No
They kill each other
Broodboosting is possible eith eggs but (don't take it as an offence, I wouldn't do it either) seeing the level of the research you've done/knowledge you have I wouldn't recommend even attempting it

[Serafine]

Only if the colony is very small. Fire ants (at least the imported fire ant Solenopsis invicta) does raid nearby nests to steal their brood. After a short battle the workers of the defeated colony defect to the victorious side and leave their nest to join the other colony, soon after even the defeated queen follows. But then the workers of most fire ant colonies will start to kill all queens except one after the colony has reached a certain size.

However there have been sightings of a new polygynous subtype with permanent multiple queens but they're still rare (except in some areas where they are slowly taking over).

[XxStrongHeroxX]

Only if the colony is very small. Fire ants (at least the imported fire ant Solenopsis invicta) does raid nearby nests to steal their brood. After a short battle the workers of the defeated colony defect to the victorious side and leave their nest to join the other colony, soon after even the defeated queen follows. But then the workers of most fire ant colonies will start to kill all queens except one after the colony has reached a certain size.

However there have been sightings of a new polygynous subtype with permanent multiple queens but they're still rare (except in some areas where they are slowly taking over).

what about the southern fire ant that is what the ant looks like to be due to the head and end is a blackish color

[XxStrongHeroxX]

Only if the colony is very small. Fire ants (at least the imported fire ant Solenopsis invicta) does raid nearby nests to steal their brood. After a short battle the workers of the defeated colony defect to the victorious side and leave their nest to join the other colony, soon after even the defeated queen follows. But then the workers of most fire ant colonies will start to kill all queens except one after the colony has reached a certain size.

However there have been sightings of a new polygynous subtype with permanent multiple queens but they're still rare (except in some areas where they are slowly taking over).

the fire ants have a brown head and is about 5 - 7 mili. and has a brown head

[Phoenix]

No matter how much an ant species look-a-like with another, they'll still most likely fight to death due to their different colony scents with a few exceptions of course; but this probably isn't one of them.