Here we call them Bangla. You can’t tell them apart from Rohingya.
Most outsiders are unable to differentiate a Rohingya from a Bengali (Bangladeshi). The only people able to do so are those from Chittagong, i.e. the Bangladesh division where Cox’s Bazar is located.
“With only minor differences in language and appearance, the average Bangladeshi cannot readily distinguish a Rohingya from a Bangladeshi.” — HRW