Video footage captured in Mtosi Bay, Tanzania, 2008.
Some of the Tropheus footage was previously (2016) published on African Diving Facebook: https://www.facebook.com/watch/?v=1789755481255477
Read about the Tropheus in Mtosi Bay in Tanganika MAGAZYN 18/2016:
https://www.facebook.com/africandivingltd/videos/1842398205991204/
https://www.facebook.com/africandivingltd/posts/1770554926508866:0
A Tropheus video, featuring Tropheus duboisi "Maswa", is available on African Diving Facebook: https://www.facebook.com/watch/?v=1844201549144203