IN A FRESH-WATER AQUARIUM.
A curious experiment was tried a short time ago to determine the brain-power of the pike. One of these voracious fish was placed in a tank with some minnows, with a glass partition separating the one from the other.
The pike for three months made fruitless attempts to catch the minnows, repeatedly dashing its nose against the glass. At last, having come to the conclusion that its efforts were of no use, it finally discontinued them. The glass was then removed, but the ideas firmly established in the pike never became disestablished, for it never afterwards attacked the minnows, though it fed voraciously on all other kinds of fish.
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https://paperspast.natlib.govt.nz/newspapers/NOT19090522.2.32.13
Bibliographic details
North Otago Times, 22 May 1909, Page 1 (Supplement)
Word Count
113IN A FRESH-WATER AQUARIUM. North Otago Times, 22 May 1909, Page 1 (Supplement)
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