Is there something special about a Snook's gills?

The Snook is a spectacular fish with extreme fighting power.A snook may be as long as 48 inches and weigh up to 38 pounds. In a fight with an angler, snook often swim toward structures, such as docks, rocks or pilings, using these structures to tangle and break fishing lines. These fish also have razor-sharp plates on their gills. During a struggle, the snook will twist and turn, fighting to cut the fishing line with its sharp gill plate.

This fish puts the sport into Florida fishing!

Source: http://www.swfwmd.state.fl.us/education/interactive/southerncoastal/popups/snook.html