This is probably better than it deserves
I have seen Rogue. This is not Rogue. This is of a lower quality, and some of the stock-footage of the actual animals is annoying. Some of the cgi used for the animals is decent, way better than one might expect from a movie like this, which is a lovely surprise.
The characters are distinct and likable enough, and the actors do a good job of portraying them, giving them all enough life so that you can engage with them without overstaying or overstating them.
This is not as tight as some other croc-related movies like Lake Placid or Crawl, but it is certainly better than Primeval or Black Water.
This is enjoyable.