Someone told me that maybe the amonia in the water is too high that caused the fish to loses its color. I'm wondering if high amonia can do that.
yeah so endangered that its ok to have them outside of the u.s right? OP asked about his aro's color. other then that its none of our business where he's from if the fish is legal or not where he lives.
High ammonia can make a fish completely white then translucent. i would do some heavy water changes. Can you give us some water parameters?