Adaptation says that an existing life form can adapt, without changing WHAT IT IS. A fish is not going to adapt its way into a praying mantis. However, a fish can adapt to new er environment (Provided the change is not too extreme for the animal) and IT REMAINS A FISH.
Where did the existing life forms come from to do this adaptation? See Genesis.
your attempt to equate adaptation with evolution is not honest.
You really have no idea what is in “Origin of Species” do you?
I would suggest to you that you read the original treatise before you continue. Your examples are ludicrous only because you don’t understand the basis. I would also suggest you look up adaptive traits - you’ll find it included in the definition of evolution.
Here. I will link it for you.
http://www.literature.org/authors/darwin-charles/the-origin-of-species/index.html
and
Here.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1514793/