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Studies on the ichthyo‐fauna in Plover Cove Reservoir, Hong Kong: I. Sequence of fish population changes
Author(s) -
Man Hanson S. H.,
Hodgkiss I. J.
Publication year - 1977
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1977.tb04082.x
Subject(s) - cove , biology , plover , fauna , range (aeronautics) , fishery , ecology , abundance (ecology) , population , zoology , geography , archaeology , habitat , sociology , composite material , materials science , demography
Gill‐net surveys were made weekly from May 1971 to April 1974 in Plover Cove Reservoir, Hong Kong and the results analysed to determine the fish species composition in the reservoir, the seasonal fluctuation of catches and the length frequency distribution of some major species. Over 20 species were represented in the fish fauna including almost all the naturally occurring species as well as the stocked species. Of the twenty species, some were collected regularly in gill‐net samples while others occurred rarely. Sarotherodon (Tilapia) mossam‐bicus (Peters) was the dominant species and contributed the main bulk of the catch. This species also showed distinct age groups in the reservoir and modal changes occurred seasonally. Thus, among the fish species studied only S. mossambicus showed a steady and progressive increase in abundance in the reservoir and the full development of this fish population with its wide range of feeding habits should be beneficial.