Assalaamu alaykum. Will there be ethnic differences in Paradise? I know that everyone will be 60ft tall, but I am asking about different ethnic groups such as whites, Asians, blacks, Indians, Arabs, etc.?

All perfect praise be to Allah, the Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.

Your question is not clear. If you mean to ask whether people in Paradise would have the same characteristics that they have in the worldly life in terms of color, height, shortness, and the like, then you should know that their characteristics in Paradise will be different from their characteristics in this life. What you referred to, that they shall be as tall as Aadam (Adam) is proof of this. Abu Hurayrah reported that the Prophet, sallallaahu ‘alayhi wa sallam, said, "The first group (of people) to enter Paradise will be as bright as the moon on a full-moon night. Then will come those who follow them, who will be like the brightest star in the sky ... all in the same form; in the image of their father Aadam, sixty cubits tall." [Al-Bukhaari and Muslim]

Al-Haafith Ibn Hajar wrote, "His statement that all those who enter Paradise will be in the image of Aadam means with his description, which indicates that (what some perceive in the worldly life as) shortcomings, such as blackness and others, are non-existent upon entering Paradise." [Fat-h Al-Baari]

Allah knows best.