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The common low—value fish in Chinese reservoirs are: Ëemiculter
‘leucisculus, Pseudolaubuca sinensis, Hypseleotris swinhonis,
parva and Gnathopogon sp. They usually mature early, show high
sh0rt life and are more sensitive to changes in food availability,
pressure and fishing. Low—value fish are the forage fish of
food competitor of commercial fish. Their population growth can be
by
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C.
Fish escape prevention
‘
Fish escape following rood discharges is a big threat to fish
in reservoirs. After much study and practice; barrier nets and
barriers have been
are
widely used.’
D.
Fish management: control of fish size and production cycle —
Fishing is not only a way of catching the fish products in
it is also a method of regulating the fish community and controlling
size and age composition of the population. Yield can be
formula
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Size

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