No science tries to over explain the obvious. God created each individual thing which lives. Is that so hard to believe? The evidence is everywhere yet you see right past it because you want an explanation on how. The only things we have in common woth animals is we have organs, blood, muscles, fat, bones and some form of skin. That is it. Other than that people are people, dogs are dogs, cows are cows, fish are fish, apes are apes. If you believed in God would you want God to say "I really want people to happen but I don't want to put in any work so I'll just make fish and see how it goes." or would you want a God who creates each individual creature? How is this for a valid point, if fish are the oldest species in existence then how is the gar still around? That things species goes back to when there were just fish. Surely in the course of "billions" of years they would have evolved into a new thing. And on the point about first species where did the land animals come from? You agreed a fish will ALWAYS be a fish. So that rules out fish learning to walk on land. How did those land animals get there if a fish will always be a fish? Could they have been created? Absolutely because evolution is a false, it's more like adaption. Or what about birds? Sure we have fish that jump but people jump also, none of us can fly. So birds didn't evolve from fish or land animals. They were created. Donkeys, cows, dogs, cats, rhinos, lions, tigers, lizards, worms, mice, apes, monkeys. ALL CREATED. The worm species is ancient. Does that mean they turned into snakes? Nope they were created individually. If life originated in the oceans, there would be no fish according to evolution. Yet we have fish.