Ruby's babies have been named Nebo and Niva. Their genders are unknown, and at this stage (like with Koji and Keeta), they can be told apart by the length of the white tip on their tails. Nebo has the longer white tip.
Niva and Nebo back-riding on Ruby with Koji at top right - 30th Jan 2017
Ruby and her babies are often seen with Koji. Keeta (Koji's twin) hasn't been seen for a while.