WBCHSE HS Fisheries study plan

Construct a species-combination and stocking-density table for a 1-hectare West Bengal composite carp pond, naming the ecological niche of each species and using a 6,000–8,000 fingerlings/ha scenario.

Calculate expected harvest biomass and supplementary feed demand for two integration options, paddy-cum-fish and poultry-fish, stating survival, FCR and manure-nutrient assumptions.

Design a weekly water-quality monitoring schedule covering dissolved oxygen, pH, total ammonia, alkalinity and secchi depth, with action thresholds for a carp pond.

Prepare a liming and fertilization sequence for a newly filled pond, giving quantities per hectare for three soil-pH bands and the timing of each application.

Outline the induced-breeding sequence for rohu and catla, including broodstock selection, sex identification, hormone dose, latency period, spawning and hatching steps.

Compare pituitary extract with synthetic hormone preparations on dose calculation, cost per breeding operation, handling stress and practical reliability.

Design the spawn-to-fingerling sequence across nursery and rearing ponds, specifying stocking density, area ratio, water depth and transfer timing.

Formulate a supplementary feed of about 30% crude protein from locally available ingredients and calculate expected FCR at two feeding rates.

Diagnose five common field presentations-epizootic ulcerative syndrome, fin rot, saprolegniasis, argulosis and gill fluke infestation-using visible lesions, behaviour and water-quality cues.

Build a prophylaxis checklist covering pond preparation, seed certification, stocking density, daily observation and equipment disinfection.

Explain safe drug use in finfish culture, including dose calculation, withdrawal periods and why antibiotics must not be used blindly for viral or parasitic conditions.

Compare capture and culture fisheries on yield source, employment, land and water use, risk and market orientation, and state the main sector opportunities in West Bengal.

Construct fin formulae and list key external features for eight regional species: catla, rohu, mrigal, grass carp, silver carp, common carp, Nile tilapia and mullet.

Prepare a simple identification key using fin formula, scale type, barbels, body shape and mouth position.

Compare gillnet, cast net, seine net, drag net and hook-and-line for target species, selectivity, bycatch risk and operation.

Select appropriate gear for three harvesting scenarios-nursery harvest, partial market harvest and final pond harvest-and justify each choice.

Design a harvest-to-market handling and icing protocol specifying fish-to-ice ratio, temperature range, container hygiene and expected shelf life.

Compare drying, smoking and one value-added product on cost, shelf life, quality loss and market appeal.

Prepare an enterprise budget for a small fish processing or retail unit with fixed costs, variable costs, break-even quantity and credit requirement.

Map a fish market channel from pond to consumer, identifying intermediaries, price margins and the main risk points at each stage.

Interpret a supplied water-quality dataset containing dissolved oxygen, pH, ammonia and alkalinity values and prescribe corrective actions for each abnormal reading.

Relate low dissolved oxygen and ammonia spikes to disease risk, and set monitoring thresholds that trigger aeration, water exchange or feeding reduction.

Calculate lime requirements for three soil-pH scenarios and justify the chosen agricultural or dolomitic lime rate.

Prepare an emergency response protocol for a dawn low-oxygen event and for an ammonia spike after overfeeding.

Recalculate stocking, survival and harvest output for a poultry-fish integration and a paddy-cum-fish plot under a 20% lower-survival scenario.

Audit a hatchery protocol for broodstock conditioning, biosecurity, egg handling and spawn quality checks, and list corrections.

Compare three species combinations for profitability, market risk and water-quality risk under West Bengal pond conditions.

Prepare a revised integrated farm plan that adjusts feed and stocking decisions when feed price rises by 15%.

Complete a timed 60-question mock examination spanning all ten domains and record the score by domain.

Review every missed question and write a corrected one-line rule or calculation for each error.

Explain the main extension methods used to advise fish farmers and match each method to a farm decision such as liming, stocking or disease reporting.

Prepare a final one-page formula and threshold sheet covering stocking density, FCR, liming, feed dose and water-quality limits.