That would be Walter R. Courtenay, Jr., and James D. Williams. Somehow, in writing about snakeheads for the Washington City Paper I failed to mention their landmark work SNAKEHEADS (Pisces, Channidae) - A Biological Synopsis and Risk Assessment. Shame on me. That book is packed with valuable info on our slimy friends.
Best of all, it's available for free in both HTML and PDF formats. FREE! Now go get it.