Quillback n. : An American fresh-water fish (Ictiobus, / Carpiodes, cyprinus); -- called also carp sucker, sailfish, spearfish, and skimback.

Example:
US navy U.SS.Quillback SS424?

Taxonomy
Quillback, free encyclopedia, species, Carpiodes cyprinus, search, Kingdom, Phylum, Genus, freshwater fish, deeper, suckers, appearance, mouth, coloration, scales, rivers, carpsucker, highfin carpsucker.

Defination from the web:
quillback is a type of freshwater fish of the sucker family. It grows to 26 inches ... It is called quillback because of the long filament that extends back from the dorsal fin. ... The quillback carpsucker is closely related to the highfin carpsucker and the river carpsucker. ...