WBCHSE HS Fisheries study guide
WBCHSE HS Fisheries · Work through your exam, one topic at a time.
WBCHSE Higher Secondary Fisheries is a vocational elective offered as part of the two-year Higher Secondary course (Class XI and XII) under the West Bengal Council of Higher Education. It is designed for students who want a working knowledge of pond-based aquaculture alongside their general subjects, and it is especially relevant in the fish-belt districts of the state - the 24 Parganas, Nadia, Hooghly, East Medinipur, Murshidabad and Malda - where carp farming, hatcheries and seed trade are everyday livelihoods. The WBCHSE HS Fisheries study guide has 10 sections and about 2,743 words.
01Introduction to Fisheries and Aquaculture
This domain tests whether you can place West Bengal and India in the fisheries sector and use precise terms. India is among the world's largest fish producers, with inland aquaculture contributing the larger share; West Bengal is a leading inland-fish state, and the Sundarbans adds brackishwater shrimp and prawn culture.
314 words, about 2 min02Fish Biology, Taxonomy and Identification
Count fins and rays; record unbranched rays with Roman numerals and branched rays with Arabic numerals. iii/8 means three unbranched dorsal rays followed by eight branched rays.
256 words, about 1 min03Pond Construction, Soil and Water Quality Management
Choose level land with clay-loam soil, adequate water, no flooding, and road or market access. Nursery ponds are small and shallow; rearing ponds are larger; stocking ponds are larger still.
298 words, about 1 min04Fish Breeding, Hatchery Management and Seed Production
Captive carps do not spawn reliably without a cue. Hypophysation uses pituitary extract from a mature donor, typically at 5-10 mg/kg for females, with a lower male dose; synthetic preparations such as ovaprim or HCG are alternatives.
257 words, about 1 min05Fish Nutrition and Feed Management
Natural food (phyto- and zooplankton, benthos) is produced by fertilization; supplementary feed supplies energy and protein when natural food is insufficient. Common ingredients include rice bran, wheat bran, mustard oil cake, groundnut oil cake, soyabean meal, fish meal, and mineral-vitamin mix.
263 words, about 1 min06Fish Health and Disease Management
Bacterial: Aeromonas hydrophila causes ulcers and red patches; Edwardsiella and Pseudomonas also occur. Fungal: Saprolegnia produces cotton-like growth on wounds and eggs; branchiomycosis affects gills.
272 words, about 1 min07Composite Fish Culture and Integrated Fish Farming
Polyculture uses species that feed at different levels: catla at the surface, rohu in the column, mrigal at the bottom; exotic carps add niche coverage-grass carp for macrophytes, silver carp for phytoplankton, common carp for bottom omnivory. A common six-species mix is dominated by catla and rohu, with mrigal and the exotics making up the rest.
265 words, about 1 min08Fishing Gear, Craft and Harvesting Technology
Gill nets entangle fish by the gills; cast nets are thrown and retrieved; seine nets surround and haul; drag nets scrape the bottom; lift nets and traps work on attraction or confinement. Selectivity depends on mesh size, twine, hanging ratio and where the gear fishes.
281 words, about 1 min09Post-Harvest Technology, Processing and Marketing
Fish spoil fast because of enzymes and bacteria. Kill humanely, bleed and wash in clean water, and chill immediately.
258 words, about 1 min10Entrepreneurship, Extension and Aquaculture Economics
A bankable plan states species, pond area, stocking density, expected survival, market size, fixed costs (pond, pump, net, shed), variable costs (seed, feed, lime, labour, fuel) and working capital. Credit institutions ask for a cash-flow statement and collateral or a guarantee; Kisan Credit Card and PM Matsya Sampada Yojana are relevant schemes.
279 words, about 1 min