X.-THE BEST FOOD FOR YOUNG SALMONOIDS AND FOR LARGER 

 SALMONOIDS IN PONDS. 



[From circular No. 4 of the Germau Fisbery Association, lierliu, May 28, 1877.] * 



At the meeting of German pisciculturists beld at Berlin, May 1 and 2, 

 1877, discussion on the above question was opened by JMr. Schuster, of 

 Freiburg. He said that this question was one of great importance in 

 more than one respect, and that he was desirous of obtaining informa- 

 tion from competent persons. As regards the very young fish, some 

 might say that it would be best not to feed them at all, but put them in 

 ponds before they seek their food, and while they still have a small rem- 

 nant of the umbilical bag. But this is not always advisable, for if 

 the snow melts very suddenly the young fish are easily destroyed by 

 the high water. Mr. Schuster, in conclusion, remarked that a Swiss 

 had offered him a recipe for procuring a never-failing supply of suitable 

 food, but he demanded no less than $4,000 for divulging the secret. 



Mr. Haack, of Hliningen, made a long speech on this question, which 

 he considered the most important question in pisciculture. He recom- 

 mended the following food for young salmonoids : The larva? of gnats, 

 the small larvie Baphnia, Cyclops^ &c., which are skimmed oft" stagnant 

 water (ditches, pools, &c.) with a fine muslin skimmer. Two children 

 do this early in the morning and in the afternoon, and he says he in 

 this way gets enough food every day to feed 20,000-30,000, and even 

 50,000 young fish. This is the most natural food for them, but not the 

 cheapest. Mr. Haack said he did not like to feed the fish inside the 

 building for any length of time, for even if the fish grow till they lose 

 their umbilical bag they are easily affected by the Aclilya prolifera 

 or fungus. The larger fish are fed on the larvae of the " Kriebelmiicke," 

 a sort of gnat which are found even in the coldest trout-brooks. The 

 females of this species of gnat generally deposit their eggs on floating" 

 grass. 



Ground meat ("Fleischmehl," meat-flour) and ground Norwegian fish 

 (" Fischmehl," fish flour) seem to deserve special attention. According 

 to information received from Mr. Kuffer, three to four parts ground meat 

 are mixed with one part common flour. The ground meat is boiled a 

 little in hot water and then the flour is stirred in. He had not yet tried 



* Which is the best food : (a) for youug salmonoids and (b) for larger salmonoids iu 

 ponds vt'here no food- fish can be obtained ? 



Welches Futter ist das beste : (a) f iir Salmonidenbrut, und (b) f iir grossere Salmo- 

 niden in Teichen, wenn keine Futterfische zu erhalten sind ? Aus circular No. 4 dea 

 Deutscheu Fischerei-Vereins, Berlin, den 28 Mai, 1877. Translated by H. Jacobson. 



