Key points are not available for this paper at this time.
John G. Lundberg, Maurice Kottelat, Gerald R. Smith, Melanie L. J. Stiassny, Anthony C. Gill, So Many Fishes, So Little Time: An Overview of Recent Ichthyological Discovery in Continental Waters, Annals of the Missouri Botanical Garden, Vol. 87, No. 1 (Winter, 2000), pp. 26-62
Lundberg et al. (Sat,) studied this question.