This file contains a global overview of the aquaculture species Labeo rohita. Main producer countries of Labeo rohita (FAO Fishery Statistics, ) * the Lao. Labeo rohita is a widespread species with no known major widespread threats. Rohu is regarded an excellent game fish and seems to put up a better fight in. Labeo rohita takes small percentages of mud which contains Rui is regarded an excellent game fish and seems to put up a better fight in a Common name: Rohu (English name).
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Generally, in polyculture, its growth rate is higher than that of mrigal but lower than catla.
Rohu/Rui: Labeo rohita (Hamilton, 1822)
The minimum age at first maturity for both sexes is two years, while complete maturity is labeo rohita fish after four years in males and five years in females.
In nature, spawning occurs in the shallow and marginal areas of flooded rivers.
Labeo rohita fish spawning season of rohu generally coincides with the south-west monsoon, extending from April to September. In captivity with proper feeding the species attains maturity towards the end of second year.
However, breeding does not take place in such lentic pond environments; thus induced breeding becomes necessary.
Rohu is a polygamous fish and also seems to be promiscuous. Production Production cycle of Labeo rohita fish rohita Production systems Rohu is the principal species reared in carp polyculture systems along with the other two Indian major carps viz. Due to its wider feeding niche, which extends from column to bottom, rohu is usually stocked at relatively higher levels than the other two species.
In India, the species is also cultured labeo rohita fish composite carp culture systems incorporating all three Indian major carps, as well as common carp Cyprinus carpio and two Chinese carps viz.
Rohu: Labeo rohita
Labeo rohita fish, the percentage of rohu, even within this six-species combination, is retained at percent, similar to that in the three-species polyculture system. The higher consumer preference and market demand for rohu during recent years have also led to the practice of two-species culture labeo rohita fish catla.
The latter type of aquaculture is occurring in over ha of ponds in the Koleru lake region of Andhra Pradesh, India, in which rohu forms more than 70 percent of the stock.
The three Indian major carps, rohu being the most important, are also the dominant species cultured in other countries such as Bangladesh, Pakistan, Myanmar, Lao People's Democratic Republic, Viet Nam and Nepal.
In all these countries, silver carp, grass carp and common carp are the most important species reared with the three Indian major carps in aquaculture. Seed supply Induced breeding of rohu has been catering for almost the entire seed requirement in all the countries where labeo rohita fish is cultured, although riverine collection still forms the seed source in certain small areas.
While induced breeding through hypophysation has labeo rohita fish the common practice since the development of the technology inseveral synthetic commercial formulations of purified salmon gonadotropin and dopamine antagonists such as Ovaprim, Ovatide and Wova-FH have also been successfully used in recent years.
When synthetic formulations are used, a single dose of 0.
Rohu/Rui: Labeo rohita (Hamilton, ) | BdFISH Feature
The Chinese circular labeo rohita fish is the most common system used for seed production. This type of hatchery possesses three principal components, viz.
Hematological studies in carp. Studies on fish and fisheries of Godavari and the Krishna river systems, Part I. On Fishes of Orissa.
William and Norgate, pp. Accessed 25 February Froese R; Pauly D, Economics of carp culture.
Handbook on fish culture in the Indo-Pacific region. General length-weight relationship of three Indian major carps.
Need for ecological orientation to the management of inland fisheries resources. Presidential address to the 66th Indian Sci.