Zander n. : A European pike perch (Stizostedion lucioperca) allied to the wall-eye; -- called also sandari, sander, sannat, schill, and zant.

Example:
What do you think of the name William or Daniel as opposed to Zander?

Taxonomy
Zander, Sander lucioperca, free encyclopedia, pike, walleye, species, lucioperca, Stizostedion lucioperca, native fish species, non-native species, search, Kingdom, Phylum, Family, Genus, scientific name, pike-perch, body.

Defination from the web:
Zander are often called pike-perch as they resemble the pike with their elongated body and head, and the perch with their spiny dorsal fin. ... British Waterways included zander among a "dirty dozen" non-native species most likely to harm native wildlife along rivers in Great Britain ...