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Duck weed: Lemna minor Duck weeds are the group of floating plants belonging to the genera Lemna, Azolla and Wolffia (Singh and Mittal, 1999). But Das (1997) mentioned Lemna, Spirodela, Wolffia and Wolffiella genus as duck weeds. So far, a total of 34 species of duck weeds have been …read more
Sampling The Labeo calbasu (Hamilton, 1822) is a threatened fish species (present status: Endangered) in Bangladesh due to the loss of habitats (IUCN Bangladesh, 2000). Successful artificial or induced breeding can be a good option to conserve this species. However, nursing of new born fry is an important step in producing any …read more Category: Aquaculture | Fish Disease and Health Fish pox, or carp pox, is one of the oldest known diseases of fish, recorded as early as 1563. Fish pox is a chronic skin disease that occurs among several species of propagated cyprinids. It is also called carp pox, epithelioma papillosum, and papillosum cyprini. Etiology: The etiological agent, of this disease is Herpesvirus cyprini which was first reported …read more Category: Aquaculture | Fish Disease and Health Definition: Vibriosis is an enzootic disease of fish, recorded from all over the world. It is almost exclusively caused by halophilic vibrios of the species Vibrio anguillarum and rarely by Vibrio parahaemolyticus. It occurs among various fish species, predominantly in marine and brackish waters, and occasionally in fresh water. First described as red pest disease of eels. Now described as …read more Nursery ponds are very important for producing fish seeds/fingerlings. Common carp (Cyprinus carpio) nursery pond management in Rajshahi city was observed for a period of 6 months in 2009. Findings are briefly described here. Pre-stocking management: Pond collection: Majority farmer collected ponds through lease system. Lease duration was generally 3 years and pond collection cost was reasonable. Bottom and dyke …read more |
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