HAACK RAISING SALMONOIDS IN INCLOSED WATERS. 685 



vantageously used as food for trout; thus, e. #., the crucian carp, which 

 iu North Germany is found in enormous numbers in every little pond.. 

 Such little ponds are, on account of the great fecundity of the crucian, so 

 densely populated that these fish became absolutely worthless as an arti- 

 cle of human food. As the crucian is a very hardy fish, and can easily 

 be transported long distances, there is a possibility of feeding large 

 numbers of trout with live fish. 



I was therefore deeply interested in the views expressed some time 

 ago in the Deutsche Fischerei-Zeitung, by Mr. Dallmer, superintendent 

 of fisheries, that certain portions of his district increased their produc- 

 tion of trout very considerably by using the crucian as an article of food. 

 This production should be still higher in the neighborhood of large 

 cities, such as Hamburg, Bremen, Hanover, and Berlin, because there 

 salt-water fish can at times be bought very cheap. 



As long as trout will bring $1.20 to $1.42 per kilogram, there is no 

 fear that a well-arranged piscicultural establishment, well supplied with 

 suitable food, will not pay. 



The raising of salmonoids in inclosed waters is an industry which has 

 been by far too little developed, and which most assuredly has a great 

 future. 



I shall endeavor as far as possible to give a clear idea of this industry 

 at the coming International Fishery Exposition. 



Quite young salmonoids, as well as some one and two years old, will 

 be exhibited in inclosed waters and be fed in a rational manner. 



It is my earnest hope that many new followers may be gained for this 

 important branch of industry, to which I have given special attention 

 for quite a number of years. 



