Does a RO, filter out chloramines?

[hillegom]

I know the carbon in a RO filter will take out the chlorine that is in the water, but without a DI, will the chloramines (NH2Cl) also be taken out?
I have a RO/DI but my brother who has fresh water fish, only has an RO.

Sodium thiosulfate (Na2S2O3) will dechorinate the water, but it leaves the ammonia behind. I do not want that.

Any chemists feel like chiming in?

I guess that you could always buy a complete conditioner, but I was looking for something more DIY

Thanks