[137] POND CULTUK... 603 



ay a general rule; and I would only call atteutiou to the necessity of 

 obtaining- the fry in an embryonic condition or of getting young lish 

 from fish cultural establishments. Mr. Kuft'er, of Munich, has informed 

 me that in his establishment he has raised salmon-tront Aveighing 3 

 j)ounds and more. His establishment is led entirely by pure spring 

 water, which comes from the top of the hill on which the establishment 

 is located. It consists of some very small shallow ponds and a num- 

 ber of granite tanks. As food, he generally uses the entrails of fish 

 but also live and dead fish. As these different kinds of fish have been 

 successfully raised in various loc^ilities, and in other than spring water, 

 experiments on a small scale, according to the method given for the 

 raising of brook trout, may be recommended. These experiments can 

 be made only where besides large, there are also a number of very 

 small, ponds. Large ponds are never suitable for experiments, in the 

 first place because they are diflicult to overlook, and secondly becanse, 

 in case of failure, the loss would be doubly great, as a large pond area 

 Avould be rendered useless for carp-culture. If the exi)eriments should 

 prove successful, the culture of these fish may be carried on more ex- 

 tensively. 



12. THE VAEIOUS KINDS OF COEEGONUS. 



To the keeping of these fish we may apply, in a general way, what 

 has been said regarding the salmon. I cannot urge fish -cultivators 

 too strongly to bring both these kinds of fish within the reach of pond 

 culture, as I feel convinced (if I prove a false prophet I shall be greatly 

 l)leased) that by fish-culture and the placing of fry in open waters the 

 number of the finer kinds of fish will increase to such an extent as to 

 lower the price of carp, so that pond cultivators will find that exclusix <} 

 carp-culture does no longer pay, and that it J^ill have to be confined to 

 those pond farms where it is impossible to raise or keep the finer kinds 

 of fisb. Experience has j)roved that the raising or keeping of the finer 

 kinds of fish is in most cases successful. As an illustration, and for the 

 encouragement of enterprising pond cultivators, I shall quote the fol 

 lowing, relative to the keeping of the Coregomis manvna^ from a report 

 by Mr. Eckardt in Lubbinchen, near Guben.* 



According to a report of Mr. A. Stenzel, inspector of fisheries, in 

 No. 7 of the Circulars of the German Fishery Association for 1875, it 

 appears. 



1. That the Goregonus marmna grows rapidly. 



2. That proof has been furnished that this fish, by means of artificial 

 culture, can be planted anywhere in suitable water, and that it will 

 soon accustom itself to a difierent quality, depth, and temperature of 

 water, and to a different food. 



3. That tbe very general but erroneous opinion that the various kinds 

 cf Goregonus which live in lakes could only thrive in these, has been 



^ JJeutsche F\8cher^i-Zeitun(j^ 1878, p. 10, 



