. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. rom thecrown. It is a case containing pollen balls. When the case splits thepollen floats to the top, where, by the action of wind, insects or otherchance, fertilization is accomplished. Few of these plants in the aquariumstart from seed. For one or two large plants to dominate the centre of the aquarium,nothing is better than Giant Vallisneria, now brought from the SouthernStates by some of our leading dealers. Its leaves are as wide as those ofGiant Sagittaria, but much longer, varying from t
. Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects. rom thecrown. It is a case containing pollen balls. When the case splits thepollen floats to the top, where, by the action of wind, insects or otherchance, fertilization is accomplished. Few of these plants in the aquariumstart from seed. For one or two large plants to dominate the centre of the aquarium,nothing is better than Giant Vallisneria, now brought from the SouthernStates by some of our leading dealers. Its leaves are as wide as those ofGiant Sagittaria, but much longer, varying from two to four feet, accord-ing to conditions. This variety is also a constant grower. Stocks ofVaUisneria or Sagittaria suited to the aquarium do not do well outdoorsin direct sun, the old leaves dying and the new ones only developing afew inches in length. ANACHARIS Known to American aquarists as Anacharis and in Europe as Elodeait is also popularly called Ditchmoss, Water Pest, Water Thyme, and Bab-ingtons Curse. Some of the rather uncomplimentary titles are due to a TKOPICAL FISHKS 173. Fig. 121. Wild Anach.\ris (Life sise) 174 GOLDFISH VAEIETIES A^^TD characteristic which, at least in the aquarium, should be considered afavorable point—that is—rapid growth. It may generally be taken forgranted that if an aquatic plant is thriving, it is doing good work for theaquarium. In form it is moss-like, the leaves growing on a fragile stem,the entire plant being completely submerged at all periods. Several spe-cies are distributed throughout the United States and Southern cultivated variety, probably derived from A. canadensis, is considerablylarger than the common local specimens to be found. The closeness of theleaves together depends upon the strength of light in which the plant iskept, the difference being so pronounced that sections of the same plantdivided and kept in strong and weak light conditions will soon appear sodifferent as to be scarcely recognizabl
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