. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. 802 BULLETIN OF THE BUREAU OF FISHERIES. The spawners and the spawning pond.—When the pond is in order, the spawners are put in and may now be left to themselves. The proportion between male and female is something like i to 4. The fish must be fed regularly, say three or four times a week. Herring are chiefly used, but other fish containing much oily matter, as saithe, whiting, or haddock, are pref- erable. The pond at Flodevig will hold about 350 cubic meters of water, Vy>^^.>. lilt t-i— to s o 20 ^Wt-jf Fig. I.—Plan of Fl
. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. 802 BULLETIN OF THE BUREAU OF FISHERIES. The spawners and the spawning pond.—When the pond is in order, the spawners are put in and may now be left to themselves. The proportion between male and female is something like i to 4. The fish must be fed regularly, say three or four times a week. Herring are chiefly used, but other fish containing much oily matter, as saithe, whiting, or haddock, are pref- erable. The pond at Flodevig will hold about 350 cubic meters of water, Vy>^^.>. lilt t-i— to s o 20 ^Wt-jf Fig. I.—Plan of Flodevig hatching station. sufficient for about 2,000 spawners of medium size. The water supply must be regular and proportionate to the number of fish—at Flodevig 30,000 to 50,000 liters per hour. In feeding the fish a certain quantity of food and offal will sink to the bottom, and together with unimpregnated eggs, excrement from the fish,. 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 United States. Bureau of Fisheries. Washington, D. C. : Govt. Print. Off.
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