42 H aw aiian F is h e s 



The Board of Agriculture and Forestry of the Territory of Hawaii has 

 undertaken to introduce this Httle fish into Hawaiian waters in an effort 

 to provide more bait fishes for the tuna industry. 



THE SALMON AND TROUT FAMILY 



19 Family Sahnonidae 



The members of this family are an unusual and interesting group of 

 fishes. They are of great importance to us because of their food, their 

 beauty, and their game fishing qualities. 



They nearly all have oblong bodies with rounded bellies, a naked head, 

 a body covered with cycloid scales, no barbels, a forked caudal fin, about 

 sixty vertebrae, and most unusual of all — an adipose fin. This last character 

 alone is almost sufficient to identify the members of the family. 



The members of this family live in both salt and fresh water and have 

 very interesting histories. Some of the members live in the sea and lay 

 their eggs in fresh water, others live in deep lakes and spawn in shallow 

 water and streams, while still others live in streams and brooks. They 

 also vary from gamy, voracious fishes to docile, defenseless species. 



A recent family, geologically speaking, they are confined to the North 

 Temperate Zone and number about one hundred species. 



A few members of this family have been introduced into Hawaiian 

 waters. 



Rainbow Trout 



19-1 Salmo species 



The streams of the Island of Kauai were stocked several years ago by 

 one of the several species of trout. They seem to have become well estab- 

 lished and are now taken by fishermen in the streams of that island. 



The exact identity of this trout has not been determined because many 

 of the species look nearly alike and are difficult to identify. 



Both salmon and trout have been introduced into the streams of the 

 Hawaiian Islands at different times. Jordan reports that "in 1876 some 

 salmon and trout eggs were sent to Honolulu by the California Fish Com- 

 mission in exchange for 100 awas (milk fish), which it was designed to 

 plant in California waters." There is no record of the outcome of the 

 experiment. 



The streams in the Hawaiian Islands are not well suited to salmon 

 and it is very doubtful if they will thrive here. 



