I don’t know. I keep brown rice, my black rice, and my red rice in the freezer. I’ve kept those for at least 2 years without issues
I will have to keep looking but I cannot find any thing online indicating what the storage life of red rice is at room temperature. I have oxygen absorbers and desiccants when I store the white rice. I’ve eaten white rice 5 years later and it’s perfect a storing that way in a half gallon canning jars.
What kind of container do you use for the rice in the freezer?