DISEASE CONTROL 



pounds of tish. Treatment with 

 kamala should be continued for .3 

 days. 



Here is a list of the chemicals and 

 drugs that are recommended for use 

 in the treatment of bait fishes : 



CONTROL OF SPECIFIC 

 DISEASES 



Fungus diseases 



Fungus disease of fish is usually 

 attributed to an organism called 

 Saprolegnia parasitica. At the 

 point of infection, the fungus ap- 

 pears as a grayish-white fuzz. This 

 growth spreads rapidly over the 

 body surface, and the fish is some- 

 times almost completely enveloped 

 before death occurs. It is a common 

 disease of fish, especially in warm 



waters, or in tanks and aquaria. 

 The focus of infection is usually 

 traceable to some injury which per- 

 mits entrance of the spores. This 

 disease is controlled in nature by 

 certain bacteria which are found 

 in the mud and ooze of lake and 

 pond bottoms. Infected fish from 

 tanks should be dipped for 5 min- 

 utes in a concentrated salt solution 

 (see Dipping, p. 53). In stubborn 

 cases, the treatment can be repeated 

 several days in succession. A 10- 

 second dip in malachite green 1 : 



57 



