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Raamatud Books
" In the latter instance these movements are very quiet and uniform, the fish swimming"round their tank in one shoal and one continuous stream. At night, on the contrary, the shoal is entirely broken up, each fish taking an independent path and darting... "
The Aquarium: Its Inhabitants, Structure & Management - Page 172
by John Ellor Taylor - 1876 - 316 lehte
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Zoologist: A Monthly Journal of Natural History

1876 - 494 lehte
...shoal is entirely broken up, each fish taking an independent path and darting from one side of the tank to the other with an amount of agility scarcely to...on successfully at night, that being the time when the fish rise to the surface of the water, to feed on the innumerable organisms that there abound....
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The Popular Science Monthly, 9. köide

1876 - 802 lehte
...light the fish still retained their active habits, and it was noticeable that during these night-hours they were more than ordinarily alert for food, dashing...explain why " drift-net " fishing for herrings can be carried on successfully only at night, that being the time when the fish rise to the surface of...
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Journal, 24. köide

1876 - 1056 lehte
...shoal is entirely broken up, each fish taking an independent path and darting from one side of the tank to the other with an amount of agility scarcely to...on successfully at night, that being the time when the fish rise to the surface of the water, to feed on the innumerable organisms that there abound....
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