KILLIFISH--these fish are beautiful. i have a male and female in one of our tanks
i looked them up, and found out they are also pretty amazing and determined beings as well
so, you must consider what the video does not state:
1- that last rainy season, some depression must have been made in the same spot or near enough so that it's area encompassed the same area as the eggs were hatched in the new season
2- that something as big as an elephant, could have stepped on that ground, dry at the time, without destroying the eggs
3- that the eggs hatch in such a small amount of water as tepid and stale as it is
4- that the fish can make it across land
also, regarding the elephant's footprint where this year's came down in the near exact spot as where the eggs were. The video does not say if the eggs were laid in a puddle created by a previous elephant's print a year earlier or if it was some other thing that made the depression.
But, if it was an elephant, and considering the intelligence of elephants-and their fellow mammals like seals, dolphins and whales and the things they do that is beneficial to other creatures, did the same elephant or same troop, come through the same path having some knowledge that these fish need it to do so,in order that the fish can survive.
is the elephant cognizant that it is acting in an altruistic and symbiotic manner? Or is it just chance? there are way too many Killifish to chalk it up to chance I say, but hey...