Guppies
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Discusses the control of water pollution by biological means. Shows that a little fish called guppy can live in polluted water by feeding on wigglers and industrial sludge and is effective in controlling mosquitoes. Describes a similar species called top minnow which has proved to be useful in controlling wigglers, but is less adaptable to polluted water than the guppy.
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- 16mm Filmography (legacy record) — title, creator, format, sound, description, catalog record
Original permalink · Record added 2023-02-27 02:53:50