It's not a tibee, a tibee is two shrimp of the same species having a baby, and a serrata x cantonensis cross is a true hybrid.
It's funny because tt x tiger f1 and f2 look the same as tt x crs f1 and f2. I'm working with tt x bkk right now and it's interesting the similarity of all cantonensis when crossed. You can really point out the similarities.
Also most true hybrid grows faster than a tibee, due to hybrid vigor. Since tibees aren't true hybrids they don't have hybrid vigor.