A fish species of today would have evolve from a prehistoric species, right?

Answer 1

Not necessarily. It is said some sharks are very similar now to what they were back then.

Answer 2

Maybe, maybe not. There are plenty of prehistoric species that are still around. Things like turtles haven't really changed much in millions of years. If you have a niche that works, there is nothing to make you evolve.

Answer 3

NO not necessarily, you are really making yourself look stupid because it is so evident you really know nothing about evolution.
Do you listen at all when people say that some species never HAD to evolve, like sharks, do you know what that means at all? The basis to evolution is survival of the fittest and adapting to your environment, but that only happens if it's successful and it needs the adaptation and if they don't adapt, they die out.--Sharks have looked the same as their prehistoric ancestors, does that answer your question?

Again, open a book, read some biology text books for god's sake,

get your head from out your ancient manuscript you worship.,
IT is killing your brain cells.

or you could retrieve your dignity and stop making it so apparent how ignorant you are to science.

Answer 4

not necessarily. new life forms are beginning all of the time. scientists have discovered previously undiscovered life forms around undersea vents (cracks in the earth's crust that super heat the surrounding water). the smallest are single celled bacteria and the largest are the size of eels. all in their own little colonies each one feeding off of the smaller ones. if the fish were really small, i suppose it could have evolved in the past 20,000-30,000 years. is that prehistory?
if by prehistory you mean, say, 2,000 years, i doubt if something the size of a sardine could have evolved.

Answer 5

wrong.
All fish recorded thousands of years ago try finding one that has recorded becoming something else.)Over thousands of years there should be some half and half,some one tenth and ninety percent,some twenty-five and seventy-five percent new and old.
Species become extinct but new forming species are never found.

Answer 6

Yeah, something that the aliens planted on this planet a long time ago

Answer 7

that is about right, fish and humans are decendents of ancient species.

Answer 8

Yep
that's how evolution works

Answer 9

Now you're gettin it!

Answer 10

yup