The easiest way to identify Kelly is by looking at her tail - she is missing the long hairs at the end of her tail. Additionally, her ears are more rough around the edge compared to Tara's.
As the only male in the elephant herd, Msholo is easily identified as the tallest and largest of the three elephants.
Unlike Kelly, Tara has long hairs at the end of her tail. Her ears are smoother around the edges compared to Kelly and her belly droops down.