332 Fresh Water Aquarium 



ring of the patients into flat vessels exposed 

 to the sun and stocked with an abundance of 

 oxygenating aquatics has been found bene- 

 ficial and may be tried, if the lives of valu- 

 able specimens are at stake. Careful, not 

 too generous feeding will further the cure. 

 If this malady is not noticed until it is 

 strongly developed it is best to destroy the 

 victims, as at present no effective treatment 

 is known. 



PARASITIC MALADIES. 



The majority of our aquarium fishes are 

 subject to the attacks of certain parasites, 

 both animal and vegetable, some living on 

 the outside only, others entering the internal 

 organs. The damage caused by these para- 

 sites depends upon their abundance. While 

 sporadic individuals may only slightly annoy 

 the fish, their presence is not without dan- 

 ger, as their propagation is exceedingly 

 rapid. They soon form populous colonies 

 and thereby exhaust the vitality of their 



