Hawaiian Fishes 



171 



THE RUDDER FISH OR BUTTER FISH FAMILY 



81 Family Centrolophidae (Stromateidae, Nomeidae) 

 The rudder fishes are nearly all small fishes with oblong bodies. They 



are nearly all pelagic and are most often found under floating medusae 



and in the bodies of tunicates. 



Three species of this family are recorded from the Hawaiian Islands. 



Evermann's Rudder Fish 



81-1 Cubiceps evermanni (Jordan & Snyder) 



Drawn from Fowler 



This rudder fish is bluish in color and has large firm scales. It 

 measured about eighteen inches in length and is known from three 

 specimens taken in the Hawaiian Islands. 



Rudder Fish 



81-2 N omens gronovii (Gmelin) 

 This rudder fish is striped with blue and silver and reaches a length 

 of about two inches. It is circumtropical in its distribution. 



Rudder Fish 



81-3 Psenes arafurensis Gunther 

 This rare fish is known from two specimens taken in the Arafura Sea 

 and at Gardner Island in the Hawaiian Archipelago. The Hawaiian 

 specimen measured almost three inches in length. 



