Asian sea bass (Lates calcarifer) is an important species for aquaculture in Southeast Asia. It can be cultured in both freshwater and saltwater. Major issues in sea bass culture include cannibalism in young stages, dependence on high protein feed sources, and unpredictable wild fry availability. Sea bass nursery rearing is typically done in earthen ponds, concrete tanks, or net cages with fry stocked at high densities. Grow-out is usually done in ponds or cages at lower stocking densities, feeding on trash fish. Sea bass polyculture with tilapia is also common, with sea bass reaching market size of 600g within 4-5 months.
Aquaculture is the most reliable sector to the providing world nutrias food. It is all depended on the cultivable species. Asian seabass is one of the candidate species for aquaculture because of the wide range of water quality tolerance, growth performance, and consumer preference. The Indian and Western Pacific Oceans are where Asian seabass is found in its natural habitat. It can be cultured in the earthen pond, floating or stationer cages, and recirculating system. Seed resources are available in rivers and lakes of fresh water, but aquaculture is the depending on the hatchery that produces seed because of the superior growth production. In the nursery phase, cannibalism is predominant in Asian seabass cultivation, which will improve via the grading of a shooter. Feeding is one of the important management for good growth performance and reducing cannibalism to give the optimum feed requirements. The growth rate of the Asian seabass is 400-600 g in 4 to 6 months. Asian seabass farmers are suffering from some infectious and non-infection diseases, it will improve via the good management practices of the culture promises. In this review paper, some key points of Asian seabass farming are covered for better understanding.
Aquaculture is the most reliable sector to the providing world nutrias food. It is all depended on the cultivable species. Asian seabass is one of the candidate species for aquaculture because of the wide range of water quality tolerance, growth performance, and consumer preference. The Indian and Western Pacific Oceans are where Asian seabass is found in its natural habitat. It can be cultured in the earthen pond, floating or stationer cages, and recirculating system. Seed resources are available in rivers and lakes of fresh water, but aquaculture is the depending on the hatchery that produces seed because of the superior growth production. In the nursery phase, cannibalism is predominant in Asian seabass cultivation, which will improve via the grading of a shooter. Feeding is one of the important management for good growth performance and reducing cannibalism to give the optimum feed requirements. The growth rate of the Asian seabass is 400-600 g in 4 to 6 months. Asian seabass farmers are suffering from some infectious and non-infection diseases, it will improve via the good management practices of the culture promises. In this review paper, some key points of Asian seabass farming are covered for better understanding.
Asian Seabass is a very popular food fish in South Asian countries. This presentation deals with Asian seabass farming in Thailand which includes breeding, larval development, and growout technology. This presentation is a part of my internship work at the Asian Institute of technology.
Seed production of giant freshwater prawn fisheries pptAshish sahu
Giant freshwater prawn seed production starts in Andaman - INDIA - A scientist and his team of the Division of Fisheries Science, Central Agricultural Research Institute (CARI), Port Blair, have initiated research on breeding and larval rearing of Giant Freshwater Prawn (M Rosenbergii) under controlled conditions at the CARI farm complex.
Cold water Fisheries occupy an important place amongst the freshwater fishes of India. The cold water fisheries deal with fisheries activity in water where temperature of water ranges from 5 to 25 degrees centigrade. The water temperature under cold water fisheries should not be more than 25°C even in summer
Mud crabs, also known as mangrove crabs, occur widely in estuaries and along tropical, subtropical and warm temperate coasts in the world. There are four species of mud crab (Family: Portunidae), Scylla serrata, S. tranquebarica, S. paramamosain and S. olivacea that are the focus of both commercial fisheries and aquaculture production throughout their distribution. They are among the most valuable crab species in the world, with the bulk of their commercial production sent live to market.
This slide is about a pearl spot fish which includes about its habit, habitat ,morphology, food and feeding, breeding behaviour, hatching, larval rearing, embryonic development, nutritive values, farming practices, seed production and pond preparation...
Asian Seabass is a very popular food fish in South Asian countries. This presentation deals with Asian seabass farming in Thailand which includes breeding, larval development, and growout technology. This presentation is a part of my internship work at the Asian Institute of technology.
Seed production of giant freshwater prawn fisheries pptAshish sahu
Giant freshwater prawn seed production starts in Andaman - INDIA - A scientist and his team of the Division of Fisheries Science, Central Agricultural Research Institute (CARI), Port Blair, have initiated research on breeding and larval rearing of Giant Freshwater Prawn (M Rosenbergii) under controlled conditions at the CARI farm complex.
Cold water Fisheries occupy an important place amongst the freshwater fishes of India. The cold water fisheries deal with fisheries activity in water where temperature of water ranges from 5 to 25 degrees centigrade. The water temperature under cold water fisheries should not be more than 25°C even in summer
Mud crabs, also known as mangrove crabs, occur widely in estuaries and along tropical, subtropical and warm temperate coasts in the world. There are four species of mud crab (Family: Portunidae), Scylla serrata, S. tranquebarica, S. paramamosain and S. olivacea that are the focus of both commercial fisheries and aquaculture production throughout their distribution. They are among the most valuable crab species in the world, with the bulk of their commercial production sent live to market.
This slide is about a pearl spot fish which includes about its habit, habitat ,morphology, food and feeding, breeding behaviour, hatching, larval rearing, embryonic development, nutritive values, farming practices, seed production and pond preparation...
Culture Of Cobia- Its Biology, Seed Collection & Culture TechniquesHaladharHembram2
Cobia , Rachycentron canadum also known as Lemon fish or Ling is an oceanodromous , migratory and pelagic fish that lives in brackish and marine waters.
The fish is popular known by the common names-Black kingfish, Black salmon, runner or sergeant fish, crab eater and Sea murrel.
It is a highly priced game fish with high market value both in domestic and international markets.
Cobia known for its excellent meat quality is a famous premium food fish highly preferred by people in Taiwan and Japan. The white meat of the fish is served in restaurants as raw fish called Sashimi.
The fast growth rate, adaptability to captive breeding (attains 6-8 kg/year) are the major attributes which makes cobia as an excellent candidate species for aquaculture.
Cobia is one of the marine finfish species with high aquaculture potential particularly for cage culture in India.
The principle of integrated fish farming involves farming of fish along with livestock or/and agricultural crops.. This type of farming offers great efficiency in resource utilization, as waste or by product from one system is
effectively recycled. It also enables effective utilization of available farming space for maximizing production.
•The rising cost of protein-rich fish food and chemical fertilizers
as well as the general concern for energy conservation have created awareness in the utilization of rice and other crop fields and livestock wastes for fish culture. Fish culture in combination with agriculture or livestock is a unique and lucrative venture and provides a higher farm income, makes available a cheap source of protein for the
rural population, increases productivity on small land-holdings
and increases the supply of feeds for the farm livestock.
Scope of Integrated Fish Farming
The scope of integrated farming is considerably
wide. Ducks and geese are raised in pond, and pond- dykes are used for horticultural and agricultural
crop products and animal rearing.
The system provides meat, milk, eggs, fruits,
vegetables, mushroom, fodder and grains, in
addition to fish.
Hence this system provides better production, provides more employment, and improves socio- economic status of farmers and betterment of rural economy.
Classification of Integrated Fish Farming
Integrated fish farming can be broadly classified into two, namely Agriculture-fish and Livestock-fish systems
Agriculture-fish systems- Agri-based systems include rice-fish integration,
horticulture-fish system, mushroom- fish system, seri-fish system.
Livestock-fish systems- Livestock-fish system includes cattle-fish system, system, pig-fish system, poultry-fish system, duck-fish system, goat-fish system, rabbit-fish system.
Integrated fish farming systems refer to the production, integrated management and comprehensive use of aquaculture, agriculture and livestock, with an emphasis on aquaculture. Asia has a long and rich history of integrated fish farming. Written records from the first and second centuries B.C. documented the integration of aquatic plant cultivation and fish farming. From the ninth century, records showed fish farming in the paddy field. From the fourteenth to sixteenth centuries, there were records of rotation of fish and grass culture; and by the 1620s, the mulberry-dike fishpond, the integration of fish and livestock farming and complex systems of multiple enterprises integrated with fish farming were developed. Integrated fish farming is the methods by which fish is cultured along with paddy, piggery, poultry or any livestock, or flower culture.
Fish Hatchery Management for Maintaining the Genetic Quality
Artificial propagation of fish species in hatcheries has been conducted on a large scale for several decades
In recent years, conservation hatcheries aims not only to produce fish for supplementing wild populations but also to preserve the genetic diversity and integrity of threatened or endangered species
Important considerations are maximizing genetic diversity and effective
population size while minimizing inbreeding and adaptation to captivity
Objective
To maintain the genetic diversity, effective population size and to minimize inbreeding
Groupers belongs to the family Serranidae.
⚫ Groupers are classified in 14 genera of the subfamily Epinephelinae, which comprises at least half the approximately 449 species in the family Serranidae.
⚫ Several grouper species have been raised on a commercial scale, but mostly by growing out captured wild juveniles.
cage-culture
Culture of fishes in meshed boxes placed in water is called cage culture.
It is an intensive method of aquaculture.
Cage culture is practiced in areas where there is sufficient water movement.
It is done in river, lakes, estuaries & seas.
Wetlands are... areas where a water table is at, near, or just above the surface
and where soils are water-saturated for a sufficient length of time such that excess
water and resulting low soil oxygen levels are principal determinants of vegetation
and soil development. wetlands will have a relative abundance of obligate
hydrophytes in the vegetation community and soils featuring “hydric” characteristics.
• Fish needs some extra feed
along
with
available
natural feeds in water for
their regular growth.
• This extra feed which are
provided to fish is called
supplementary feed of fish.
Rice bran
•Refined pulse and wheat roughage
•Mustard or sesame cake
•Fish-meal (fish powder)
•Blood and innards of bird or animal
•Green leaves of various vegetables
•Minerals and vitamins
•Kitchen leftovers, etc.
The term 'Biofertilizer' itself means 'Live
Fertilizer'.
contain live or latent beneficial microbes
which help to fix atmospheric nitrogen,
solubilize
and
mobilize
phosphorus,
translocate minor elements (Zinc, Copper,
etc.,) to the plants, produce plant growth
promoting hormones, vitamins, amino acids
and control plant pathogenic fungi
Management of ornamental fish farm.
Pond fish keeping
Pond Construction
Sitting a pond
Site of a pond
Equipment
Stockings of pond with fish
Invertebrates and amphibians
Pond maintenance feeding
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The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
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1. Asian sea bass Lates calcarifer culture
Phylum
Class
Order
Family
Genus
Species
:
:
:
:
:
:
Chordata
Actinopterygii
Perciformes
Latidae
Lates
Lates calcarifer
(Bloch, 1970)
2. INTRODUCTION
• Asian seabass is also called as giant perch (centropomidae) and in India it is
called as “Bhetki”.
• Highly euryhaline habit enables culture in F W & S W condition & living in
estuaries.
• Distribution: found in the littoral water of Indo-West Pacific region extending
from Iran to Australia, its profitable culture carried out in SEA countries
especially in Thailand & Taiwan.
3. CONTINUE…
Major problems during Bhetki culture are,
1. Predominant cannibalistic during young stages (1-20 g).
2. Its depends on high protein rate or on trash fish which is staple diet of poor in
developing countries.
3. Unpredictable wild fry availability, in India fry availability abundant in East
coast than West coast.
Importance: In shrimp farmers turning to next most lucrative finfish sp. Lates
calcarifer & other sp.
5. Nursery rearing of Bhetki fry
• Rearing carried out in earthen ponds, concrete tanks or cages.
• Earthen ponds: range 500-2000 m2. water depth 50-80 cm and 1 mm screen
mesh fitted to inlet & outlet gates to protect fry.
• Concrete nursery: usually 300 m2 with muddy bottom & water column of 1
m. Aeration by bubbling air through a blower.
• Floating or stationary net cages: with 1 mm mesh (size rise with fish). Nursery
size range 3 to 10 m3 easily installed and maintained in rivers, coastal areas or
in large ponds in calm water areas free from pollution & menace of biofoulers.
6.
7. BHETKI NURSERY IN INDOOR TANKS INDIA
• NURSERY REARING IN INDOOR CEMENT TANKS:
• 4 cement tanks 10x6x5 with 700LS.W
• Stock @ 10000 & 100% survival.
• Feeding: 4% of BW & 4 times/day.
• Initial avg wt bhetki fry 2.5g after 45 days 91.03g
• FCR 1.15 & PER 1.07
• temperature - 29.2 to 29.8 °C, pH - 7.2 to 7.4, salinity - 31.2
• to 32.6 ‰, DO - 5.5 to 6 mg l-l, ammonia -0.02 to 0.03 mg l-l,and nitrite 0.01 to 0.02
mg l-l
8. CONTINUE…
• In Thailand, nursery ponds reared size from 1-2.5 cm to fingerling 5-10 cm.
• Prior to 2 or 3 weeks stocking newly hatched Artemia nauplii inoculated in to
pond @ 0.1g/m2. Artemia nauplii grow to adult within 2 weeks.
• Bhetki fry stocked @20-50/m2 best alternative feed to fry finally chopped or
ground trash fish @ 100% of fish biomass, twice/day in 1st week & gradually
reduced to 60% in 2nd and to 40% in 3rd week.
9. CONTINUE...
• Water exchange is @ 30% per day prevent deterioration of water.
• In Thailand, nursery rearing in cages fry stocked @ 80-100 no/m3.
• Nursery rearing of fry in concrete tanks: in Taiwan: filled with SW
early fry of 0.5-1.3 cm reared to 5-6 cm fingerlings.
• Fry stocked @ 250-300/m2. Zooplankton of productive shrimp pond of
4 ha area enough for estimated 1 million Bhetki fry. At 5-6cm sold to
grow out pond operator.
10. Rearing of bhetki to marketable size
• Grow out culture phase varies from 3-4months attain 300-400g to 8-12months
attaining 700-1200g.
• Size of grow out ponds ranges 0.1 to several ha
• Taiwan: Pond concrete walls with soft substrate bottom, water column of 2m in
culture period; 1 HP, 8 paddle wheel aerators per ha, 5% daily water drainable.
• Grow out cages are floating or stationary, square or rectangle: size range 20-
100m3, mesh size range 2-8 cm based on fish size.
12. BHETKIGROW OUT IN PONDS
• Has vague for > 80 years in south east Asia & Australia carried out in mono or poly culture.
Monoculture of Bhetki in ponds: Prior to stocking ponds prepared by sun drying bottom, applying
quick lime @ 800-2000 kg/ha and OM @ 300-400 kg/ha.
• Rice bran will apply @ 300-350 kg/ha, dilute night soil @ 15 tonnes/ha then pond will filled with
brackish water (5-10 ppt), 2m depth.
• Secchi disc reading 30 cm in pond water.
• Fingerlings 5-6 cm stocked @ 10000-40000/ha fed with fresh trash fish or tilapia <200g size @ 10%
biomass in grow out pond.
• Yield 10mt/ha. Avg. market size 600g within 4-5 months and 6-7 months in winter in Taiwan with
80% survival.
13. • Bhetki with tilapia is best choice as primary crop in poly culture common in
Thailand &SEAcountries.
• Tilapia brood Stock 5000-10000/ha introduced ratio of 1:3 ( M:F) breed after
1or 2 months. bhetki juveniles (5-10cm) 3000-5000 no/ha.
• Bhetkiculture in cages: well developed in Thailand, Malaysia, Indonesia,
Hongkong and Singapore. Fingerlings stocked 40-50/m3.
Stocking Bhetki
size(cm)
mesh size of cages
(cm)
1-2 0.5
5-10 1
20-30 2
>25 4
Bhetki poly culture in ponds
14. • Conti…
• Fingerlings stocked when attained 50-200g wt then by transferring next cage
reduced to 10-20fish/m3
• Feeding in cagesn2times/day chopped fish @ 10% Bw for 1st 2-3 months of
stocking then 5%BW once/day.
15.
16. conclusion
• Sea bass near surface swimming has been expected to as it hungerness it may
be due to some other impairment may lead to over feed wastage and higher
feed cost.
• it is one of major best suited candidate species and few reports from fish
farmers from India successfully cultured earned higher profits.
• Asian seabass & tilapia best suited in combination with size stage diff erent
stocking its early stage require highly animal flesh freshly.
17. References
• Rajalakshmi T. 1980 : manual brackish water aquculture India ICAR, CIFRI,
Barrackpore P125.
• Susheela jose, Mathew P.M., jose M.M. And Mrithunjayan P.S. 1988(b):
zooplankton and macrobenthos in a brackish water fish farm in the southwest
coast of India proc. First Ind Fish forum Asian fish soc: 147-149.
• Susheela jose, Mathew P.M., and Bright Singh I.S ., 1988(a) : effect of
fetilizers on the growth and production of milk fish in brackish water ponds J.
Aquatic Bio. Vii 131-139.
• FAO aquaculture species.