Other mistake: After they blow up the dam blocking their passage, there is a far away shot as they are going up river and there's a grassy landmass that goes across the river blocking their route up river.
Continuity mistake: Jennifer Lopez's eyebrows go from sparse to filled in in several scenes.
Continuity mistake: Serone catches a fish using a spear and then chops it up with a knife and a mallet. He then talks to the crew about their documentary and walks back to the chopping board where he proceeds to chop the same fish again, which is now whole. (00:12:32 - 00:13:21)
Answer: He played into his greed. Told him there can be a lot of money made if you capture an anaconda like that one.
lionhead