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Sea weeds Sea weeds, a rich source of agar and algin form the basis of confectionery, pharmaceutical and other industries. After the second world war great interest has been developed on Indian sea weeds and its industries. more info... Pearl Oyster Pinctada contributes famous ‘Pearl fisheries’ of the Persian Gulf, Gulf of Mannar and Gulf of Kutch. It also exists in Mexican Gulf and Australian Waters. more info... Elasmobranch fish The Elasmobranch fishery includes those of sharks, rays and skates which are characterized by the possession of cartilaginous skeletons, distinct placoid scales and separate gill slits without operculum. more info... Sole fish Soles and other flat fishes are bottom feeding, carnivorous and asymmetrical with both eyes being present either on the right or left side. They are represented in Indian waters by a large numbers genera, Psettodes,Poecilopsetta Bothus, Pseudorhombus, Solea, Paraplagusia and Cynoglossus. more info...
The fishery is related to large number species of molluscs found in India. Mollusca is an animal with soft unsegmented body without appendages, calcarious shell, ventral muscular body without appendages, calcarious shell, ventral muscular foor, fold of skin, called, mantle, which secrets shell, lamellate or plume like gills for respiration and usually the presence of a larval stage in development. more info... Prawn fish The prawns and shrimps of India belong to three major families, namely Pedaeidae, Palaemonidae and Sergestidae of the decapod groups. A few deep-water forms belonging to the family Pandalidae are also gaining commercial importance with the result of recent exploratory fishing activities. more info...
Pomfret contribute one of the main groups of table fish in India. They are found every where in the tropical sea of the Indo-pacific region. Though the pomfret occur all along the coast of India, the main area of abundance are Gujrat, Bombay coasts on the west coast and Orissa and lower West Bengal on east coast. more info... Ribbon Fish Ribbon fishes or hair tails of the family. Trichiuridae represented in the Indian waters by Trichiurus lepturus (Linn) Lepturacanthus salvala (Cuv), Eupleurogrammus intermedius (Grey), E. m utieus (Grey) are important, low priced food fishes landed in quantities at all the fishing centres on the east and west coasts, but in particular abundance in Kerala, Tamil Nadu and Andhra. more info... Oil Sardine Fish Among the Indian coast, the oil sardine. Sardinella longiceps Valenciennes, 1847 is a neretic-pelagic clupeoid fish, which occurs on both west and east coast of India. It is a shoaling species of the west coast of India particularly. more info... Tuna Fish Tuna is a high sea fish occurring in shoals in the tropical and temperate seas. World tuna landings in 1968 amounted to 1.4 million tonnes. Intensive fishing of tuna place in the Pacific and Indian Oceans. more info... Bombay duck fishery The Bombay duck
fishery, supported by a single species, Harpodon nehereus, contributes to about 10%
of the estimated average annual marine landings of India. With a peculiar discontinous
distribution of the species, the fishery is of utmost importance in two maritime States of
India, Gujrat and Maharashtra, where over 98% of the all-India Bombay duck catches are
landed. In fact, from the bulk of the landings and the economic returns, the Bombay duck
fishery in Gujrat and Maharashtra is equivalent to oil sardine and mackerel fisheries in
Mysore and Kerala States more info... Indian Mackerel Fishery It is a pelagic shoaling scombroid fish, widely distributed in the Indo Pacific region. But it is only in Indian Coast, this species is highly exploited. The bulk of the catch comes from West Coast of India between Cape Comorine and Ratnagiri. more info... Common Planktonic Organisms Of Indian Coastal Waters Since the marine zooplankton form the most important part of food of marine organisms and fish and the abundance of fishery in the locality depend largely on the availability of marine zooplanktons in coastal areas of the region, the common zooplanktonic organisms of Indian waters are given below. more info...
A few common species, useful on fisheries are given below:
Cells forming closely fitting, long chains, disc shaped. Valves bowl shaped with short mantle, at the base constricted disc flat, cell-wall strong. Papilla-like structures at the border of the valve. Mantel with projections. Chromatophores numerous,small, disc shaped. Cells disc shaped. Valves flat with minute spines along the border. Valve areolated in three or more systems, their size becoming smaller towards the border. Cells disc shaped, connected by a thin mucilage strand and forming a chain of 4 to 8 or rarely more. Valves convex, about 40m in diameter; very weakly silicified. Structure on valve not visible in water mounts, the cell break down when treated for balsam. Plankton of Madras Coast. Lottoral form, occurs in water of all concentrations; fresh, brackish and marine. Cells disc shaped. Valves with more of less broad evenly striated border. Central portion with flexes and coarsely punctate. Cells disc shaped, diameter 38-76m . Valves areolated areolae in several tangential series and, because of this, appearing as though in radial bundles. Numbers of areolae at the centre 9 in 10m Frequent in most seas. Cells cylindrical, diameter 23m , with conical valves. Process large, somewhat bent. Cell-wall hyaline, structure difficult to make out. Inhabitants of warmer region. Cells cylindrical forming straight chains, 32-50m in diameter. Apertures elliptical. Tiny spine at the centre of the valve. Setae arising from the inner valve surface, base of setae short. Chromatophores numerous, disc shaped, distributed in the cell and also in the setae. Valves elliptical with sollen margins, strongly sculptured with a few ribs inside. Two blunt, rounded processes at the corners; structure, areolations on both valve and girdle. Cells forming longer short chains by attachment with mucilage pads at blunt end of their processes. Frustules in girdle view linear-rectangular, forming a very compact ribbon-like chain. Valves broadly lanceolate, with rounded ends, 11.5-31.5m long 6.5m broad. Transapical striae delicate, towards the middle slightly fainter, 14 in 10m punctate, punctae, 15-18 in 10m . Pseudoraphe narrow linear. Usually distributed in the coast and among ice in polar seas. Frustules, thread like, often slightly curved. Valve linear, ends rounded 504-1624m long, 2.5m broad. Marginal striae about 14 in 10m . Cells elliptical, 18m long, 10m broad, Raphe-less valve with slightly radial transapical striae, about 18 to 10m . The transapical striae crossed by five longitudinal striae. Pseudoraphe very narrow. Valve with raphe, with slightly radial punctate striae, about 20 in 10m . Raphe somewhat sigmoid. Axial area narrow. Central area slightly extended sideways. Valve linear with obliquely truncate and obtuse end. 294-332m long, 29-38m broad. Raphe slightly excentric and somewhat flxuose. Central area small, oblique. Transverse and longitudinal striae equidistant, 12 in 10m . Valves scarcely sigmoid, lanceolate, tapering from the middle to the sub-acute ends. 74.5-140m long. 14-28m broad. Raphe slightly sigmoid, central. Transverse striae 18 in 10m oblique striae 15 in 10m . Valves linear-elliptical with slight transapical contraction of the border at the centre and blunt, boat like rounded poles,Raphe straight. Axial area small, lanceolate, dilating into a large elliptical area, which has on either side of the module of crescent-shaped figure in which striae continue faintly.plankton of Madras coast. Valves elliptical. 16.5m long, 10m broad. Central nodule large, quadrate, horns clear. Furrows narrow, in the middle scarcely bordered , slightly dilated around the central nodule. Costae slightly radial, 12 in 10m with alternating double rows of alveoli visible. Valves ellliptical 39.5-61.5m long, 21.5-36. m board lateral areas broad, semilanceolate, with almost parallel inner margins. Striae 12-15 in 10m . |
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