
AILMENTS AND DISEASES 

The large group of Schizomycetes or Yeast fungi are not treated of 
here as they do not enter into the subject. . | 
TREATMENT FoR VeGeTAL Parasites. Fishes affected with parasitic 
fungi may be successfully treated and cures effected. When given imme- 
diate attention, the spread of the fungi may be checked by salt baths or local 
application of strong brine, followed by the peroxide treatment; but when 
the ravages are not at once checked they produce fatal results. They 
sometimes produce epidemics which cause the deaths of thousands of food 
fishes and of entire broods of goldfishes. There is no radical fungicide 
which is invariably effective with the fungi. The remedies for animal par- 
asites should be applied as usually, a microscope examination only can 
determine what form of parasite is present. 
PREVENTION OF FuNci 1n AguariaA. Filtration of the water is a 
radical prevention of the introduction of and the removal of Fungi in the 
aquarium; but the spores may be brought over into the filtered water by 
the fishes themselves or on aquatic plants, snails and tadpoles, when 
these are introduced in fungused condition, or together with live food 
taken from unsanitary localities. Cleanliness in every particular is the 
best preventive, together with a frequent careful inspection of both the 
fishes and the scavengers, and the isolation of any which may have a 
doubtful appearance. Prevention is always easier than acure. Strong and 
healthy fishes are seldom attacked by vegetal parasites, but the disease is 
sometimes communicated from weakened or bruised fishes introduced into 
a previously sanitary and well-established aquarium. 
ALca# More or Less Parasitic. The common forms of Algz 
which adhere to the aquarium, on the aquatic plants, or suspended in the 
water, belong to a number of genera. Those most frequently met with 
are the following: 
CHLOoROPHYLLACE®. In the clouded water of a stagnant aquarium 
two forms of Chlorococcum, one motile and the other at rest, were found 
by Dr. H. C. Wood; the younger forms green, the older ones darkish- 
brown in color. “Chey were so numerous as to make the water opaque and 
stagnant. 
Androgynia huntii, forms delicate bright-green fringes on the plants 
and glass of the aquarium. 
Bulbocheta dumosa, forms small bushy growths on larger Algae, Con- 
fervee and other plants in the aquarium. 
Tolypothrix distorta, forms microscopic bright-green tufts or balls 
adhering to plants in the aquarium and to the glass. 
Mastigonema elongatum, forms blackish-green nodules about the size 
of a pin head on Brook-moss and Characez. 
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