I wholly agree with Bostave when he says that the presenter plays the watcher for all that he can; so it can scarcely be claimed to be a scientific exploration of any kind, However I note that even persons totally lacking in either science training or natural restraint can make meaningful, if not highly accurate observations, and it would seem that this is the case in question.
Regardless, it should be obvious that the presented situation indicates a major problem for the Sepik River. Once again it is clear that a translocated fish has been able to adapt to conditions that are almost certainly foreign, and in so doing will certainly cause grief in the long term.
Syd.
Edited by sydad, 27 September 2017 - 01:08 PM.