WISCONSIN AQUATIC NURSERIES, 
NECESSITY OF AQUATIC VEGETATION 
FOR FISH 
Many of the plants which are important food 
plants for waterfowl are also important food and 
cover plants for fish. Therefore, one will improve 
both hunting and fishing by establishing a growth 
of aquatic vegetation in their waters. 
Plant life takes a very important part in the puri¬ 
fication of waters by taking up the poisonous gases 
and sending forth oxygen into the waters which is 
essential to fish life. These plants also support 
countless numbers of minute animal life upon which 
the young fry feed. They also provide excellent 
shelter and hiding places for younger fish to hide 
and escape the larger ones which are of a canni¬ 
balistic nature, feeding upon one another. 
Aquatic vegetation assists in the clarification oi 
the waters and shades the under waters keeping 
them cool which is very helpful and healthful to 
the fish life. 
In order that there be a plentiful supply of fish 
in any waters it is first necessary to protect the 
small fry. They cannot feed upon the larger insect 
life or upon one another as the larger fish do and 
as a result in waters barren of aquatics, millions 
and millions of the fry perish. 
SUNLIGHT FOUND HARMFUL TO FISH AND 
FISH EGGS 
—Courtesy Alabama Sportsman. 
As a result of experiments at its Holden, Va., 
hatchery, the Bureau of Fisheries, Department of 
Commerce, has found that exposure to sunlight is 
detrimental to eggs, fry and fingerlings. 
The experiments, it was stated orally on Novem¬ 
ber 4, were designed to determine whether the re¬ 
markable curative results ascribed to ultra-violet rays 
and sunlight were actual. The bureau found that 
the doubts of fish culturists on this score were well 
founded, continuous exposure to direct sunlight be¬ 
ing found as not only of no benefit but definitely 
harmful to eggs and young fish. 
“There! 
Right by 
that lily 
pacl,” 
ZOWIE /- 
“What a 
Whopper!” 
“ That's 
zohere they 
lay!” 
Wisconsin Aquatic Nurseries June 23, 1930. 
Oshkosh, Wis. 
Gentlemen: Just received last order today, ordered by Mr. 
Walker. It arrived in good shape. The stuff I got before is 
coming along very nicely. Signed: Yours very truly, 
PERCY D. GASKILL, D.D.S. 
Lancaster Inn, Lancaster, Calif. 
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