THE CARE OF HOME AQUARIA 



27 



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COMMON BROOK SUCKER. 

 A native fish tliat thrives well. 



submerged by trimming. The little duckweed (Lemna) which 

 floats entirely at the surface with its tiny roots hanging straight 

 down in the water for a short distance, the moss-fern (Salvi- 

 nia) , the thread-like bladderwort ( Utricularia) and the floating 

 Riccia are all well adapted to the conditions of the small aquari- 

 um and add greatly to its attractiveness. 



The plants available for aquarium purposes are entirely too 

 numerous to mention here. There are many native species, some 

 of which can be secured in nearly every pond and stream. They 

 are generally annuals and do not live indefinitely, and the most 

 •satisfactory ones are those handled by the dealers, since these 

 are cultivated especially for the purpose. These for the most 

 part have been introduced from the tropics, where they flourish 

 perennially. 



Following is a list of those most commonly used : 



SUBMERGED PLANTS. 



Fanwort (Cabomba caroliniana). 

 Pink fanwort (Cabomba rosaefolia). 

 Mermaid weed (Proserpinaca palustris). 

 Willow moss (Fontinalis antipyretica) . 

 Common starwort (Callitriche verna). 

 Hornwort (Ceratophyllum demersum). 

 Canadian waterweed (Elodea canadensis) . 



