CAEE OF GOLDFISH 279 



of being nicely rounded upon their extremities as in 

 health, become agglutinated and appear like the 

 spikes on a cat-fish. The tissues upon the spines decay, 

 the latter looking like disarranged bristles of a brush. 

 This is the beginning of the end. The appetite con- 

 tinues in good condition, the fish nevertheless becomes 

 weaker and weaker, each succeeding day, until death 

 takes place." 



Bladder disease is most common among the 

 soaleless goldfishes and is almost invariably 

 caused by the water being too cold. When a 

 fish contracts bladder trouble it is unable to 

 maintain a normal position in the water, and 

 almost without exception falls into a vertical 

 position with the head downward. In this 

 manner it moves sluggishly and awkwardly 

 about, often resting on the bottom. Sometimes 

 a fish will live nearly two years with the com- 

 plaint before dying. It is doubtful whether it 

 is curable. 



No cure for tuberculosis is yet known. It 

 should, however, be a preventable disease, for 

 it is usually caused by mismanagement in an 

 aquarium, especially as to impure water. 

 When the disease is contracted, again using the 



