Identifier: goldfishvarietie00inne (find matches)
Title: Goldfish varieties and tropical aquarium fishes; a complete guide to aquaria and related subjects
Year: 1917 (1910s)
Authors: Innes, William T. (William Thornton), 1874-1969
Subjects: Aquariums Goldfish
Publisher: Philadelphia, Innes
Contributing Library: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
Digitizing Sponsor: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library

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Figs. 176 and 177. Side and Top Views of All-Glass Breeding Jars, Showing Escape Slit in the opening so that the wire divides the hole in half. The funnel isthen placed in a bell jar or other aquarium of a size that will suspend it TROPICAL AQUARIUM FISHES 231 by the edge, bring the water as high as possible in funnel, place femalefish in funnel and cover over with screen. The wire will prevent themother fish from becominc;- jammed in the outlet, but will allow the youngto pass through and collect in the lower portion of jar. Very excellent breeding glasses come from Germany. These havea long narrow slit in the bottom and may be hooked on the inside of anyreceptacle. See Fig. 177. Spawning Net, In the spawning season aquarium space is oftenlimited, particularly among amateur breeders who have perhaps a singleaquarium. The breeding fish should be separated from the others, as theidle fish would eat the spawn. An easy way over this difficulty is the
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Fig. 178. Spawxixg Net use of the spawning net. This is simply a square bag of cheesecloth sus-pended in the aquarium. Figure number 178 will clearly show how thismay be done. The four corners should be weighted down with bits oflead or stone sewed in. The plants and spawning fish are simply trans-ferred into the net. Confined in this comparatively small space thechances of the eggs becoming fertilized are increased, while the nettingis sufficiently open to allow the aquarium water to flow slowly throughit and prevent suffocation. In this way the large amount of dirt usuallystirred up in an aquarium at spawning time, and which can do theadhesive eggs no good, is entirely avoided. The size of the net willdepend somewhat on the proportions of the aquarium, but the capacity GOLDFISH VARIETIES AXD of net (portion in water) should be about twelve to eighteen inches long,ten inches wide and ten inches deep. In constructing, allow extramaterial for space between top frame and surface of wate

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