92 Aquatic Lite 
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 
The Rearing Tanks in the Establishment of George E. Wilt 
The selected fish should be 
Large 
much larger. 
put into a tank by themselves. 
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 
erough in any case. 
itil MS MEI, 
The fish are placed 
several bunches of 
Myriophyllum, to which the spawn will 
adhere, 
with 
the eggs and plants being re- 
moved to a hatching pan when the fish 
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 
Photograph by H. W. Schmid 
more in one day, the first spawning being 
usually the largest. 
Have two or three good-sized bunches 
of Myriophyllum or a couple of water 
hyacinths in the spawning receptacle. I 
prefer Myriophyllum, 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 aquarium, 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 
