H aw aiian F is h e s 131 



THE BARBUDO OR THREAD-FIN FAMILY 



61 Family Polymixiidae 

 The thread-fin family includes but one genus and probably only a 

 single species (several have been described) which inhabits the deep 

 waters of the Atlantic and Pacific Oceans. 



Japanese Thread-Fin Fish 



61-1 Polymixia japonica Gunther 



Drawn from Gilbert 



The thread-fin fish is of a uniform olive brown color above and is 

 pale or light brown beneath. It contains t^'O barbels on the lower jaw 

 and measures about fifteen inches in length. The Hawaiian specimens 

 were taken off Oahu between 195 and 24 1 fathoms. Tliis fish is also 

 known from Japan. 



THE BERYCOID OR NANNYGAI FISH FAMILY 



62 Family Berycidae 

 The fishes of this family are generally colored red or black and have 

 rather compressed and short bodies. They are mostly fishes of the deep 

 sea. Only one species is known from the Hawaiian Islands. 



Berycoid Fish 



62-1 Beryx decadactylus Cuvier 

 This berycoid fish is a bright rose red color and measures about two 

 feet in length. It is recorded from both Japan and the Hawaiian Islands. 

 It is not a common fish in Hawaii. 



