. Goldfish breeds and other aquarium fishes, their care and propagation; a guide to freshwater and marine aquaria, their fauna, flora and management. Aquariums; Goldfish. AQUATIC INSECTS OF FRESHWATER. the adult, and the winged existence lasts but a few weeks; oviposition being conducted by the same individual for a number of days. The larvEe of the same brood also develop unequally, some growing so rapidly that they de- vour their more tardy brethren. -When cap- tured, the nymphae not only prey upon each other but upon any living thing kept with them, and the larvse and nymphse are the most r
. Goldfish breeds and other aquarium fishes, their care and propagation; a guide to freshwater and marine aquaria, their fauna, flora and management. Aquariums; Goldfish. AQUATIC INSECTS OF FRESHWATER. the adult, and the winged existence lasts but a few weeks; oviposition being conducted by the same individual for a number of days. The larvEe of the same brood also develop unequally, some growing so rapidly that they de- vour their more tardy brethren. -When cap- tured, the nymphae not only prey upon each other but upon any living thing kept with them, and the larvse and nymphse are the most rapacious and destructive enemies of young fishes which the aquariist encounters, a single one often de- stroying an entire hat- ching of several hun- dred young fishes in a few days. Nor are their attacks confined to young fishes, what- ever contains life is fair game to them. The principal famiHes of the Atlantic Coast and Gulf States are the iEschinidas, Libell- ulidse, CorduUidae, Cordulegasteridse, Ag- rionidae, Gomphidae; and the Calepterygidae or Damsel-flies, Fig. 216. The "Hammer- headed dragon-flies" comprise the genera Agrion, Lestes and Calopteryx, which frequent grassy margins of ponds, pools and swamps. The larger are the "High-flying-dragon flies," j^schna and Corduligaster, which frequent tall shrubbery and trees and are seldom seen over ponds. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wolf, Herman Theodore, 1855-. Philadelphia, Innes & Sons
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectaquariu, bookyear1908
