Stephan Kesting from Grapplearts.com does a fantastic job (as always) of talking about the differences between the Brabo choke and the Anaconda choke.
Multiple Brazilian national champion and known for his tricky techniques, Marcelino Freitas demonstrates some attacks when inside an opponents half-guard, including this variations of a brabo choke.
Brabo Choke from Top Turtle
Otto used this technique to help get 2nd place in Abu Dhabi. You may want to learn it...