How can i get a complete scientific research about mullet fish ?

Answer 1

Just do a search on "mullet fish" and check out all the sites that come up, like this one:
http://mt.essortment.com/mulletfish_rzxp.htm

"Although many unrelated fish are called mullet, the true mullet are extremely active fish that travel in large schools throughout the tidal zones searching for food. One of the fish from the Perciformes order, the mullets comprise the family called Mugilidae. "

Answer 2

what exactly are you trying to research?

Google Scholar is a good website that'll bring up scientific papers. Looking Mullet Fish up by it's scientific (latin) name might help.

Also, www.catalogueoflife.org will give you taxonomic history.

Answer 3

You can either look on the Internet, or take a trip to your local library. I recommend the later, myself.