The info Ande posted had a comment that GShad and TShad can cross. That is a new one on me. -- shocked --

The gizzard shad is
essentially an open water species, living at or near the surface (Becker 1983;
Trautman 1981; Pflieger 1971), however, they have been collected at depths of
up to 33 m (Dendy 1945; Jester 1962). They hybridize with the threadfin shad,
Q. petenense (Minckley and Krumholz 1960; Shelton and Grinstead 1973).

Last edited by ewest; 09/26/10 07:30 PM.