File:Aquatic life (1917-1918) (19560666059).jpg

Title: Aquatic life
Identifier: aquaticlife319171918baus (find matches)
Year: 1917-1918 (1910s)
Authors: Bausman, Joseph E
Subjects: Aquariums; Fish culture
Publisher: Philadelphia : J. E. Bausman
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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92 jSlquattc Jiitt after. It pays to watch, and when it ap- pears that the female has finished, she should be taken out and placed alone in an aquarium to recuperate. The males must also be taken out or they will eat the eggs. They should have a rest of several days before being used again. When a spawn is expected the culturist should make his selection of males, choosing two or three males to a female of the same size, three or four if she is have finished. If it is not possible to provide tubs or nets, the fish may be allowed to start spawning in their regu- lar quarters, transferring them at once, the female and selected males, to an enamel dishpan of the largest size. They will then go right on spawning, but they should not be previously placed in such small quarters. A mature adult goldfish will produce from 2000 to 5000 eggs dur- ing a season, and from 500 to 1000 or
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The Rearing Tanks in the Establishment of George E. Wilt Photograph by H. W. Schmid much larger. The selected fish should be put into a tank by themselves. Large tubs of wood or fibre are excellent. If space is limited, the spawning net illus- trated will prove useful. This is merely a cheesecloth bag. tied to a wood frame, which rests across the top of the tank or aquarium. The bag can be made of a size suitable to the tank, and twelve by twelve by eighteen inches will be large enough in any case. The fish are placed ill the net, with several bunches of Myriopliyllnm, to which the spawn will adhere, the eggs and plants being re- moved to a hatching pan when the fish n:ore in one day, the first spawning being usually the largest. Have two or three good-sized bunches of MyriophyUiun or a couple of water hyacinths in the spawning receptacle. I prefer Myriophylhtm, as it makes an ad- mirable spawning bed, and may remain after the eggs hatch, helping to oxygenate the water and keep it sweet. Unless the spawning has taken place in a well-planted, established breeding tank or acj^uarium, in which there is old water and an adequate supply of infu- soria, provision must be made for its de- velopment as food for the fry. If the

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