BTSC Fishery Extension Officer 2026 Notification

Online examination comprising 100 objective technical multiple-choice questions on 4-year B.F.Sc. core curriculum (scaled to 75 marks weightage). Negative marking of 0.25 applies for each wrong answer.

25 Marks maximum weightage for candidates possessing verified contractual work experience in Bihar Animal & Fisheries Resources Department (5 marks awarded per completed year of service, certified by the District Fisheries Officer).

Verification of original B.F.Sc. degree certificates, PDC, marksheets, ICAR accreditation of institution, Bihar domicile, non-creamy layer (NCL), and experience letters at BTSC Office, 19 Harding Road, Patna.

Comprehensive physical fitness screening by Bihar State Medical Board and antecedents verification prior to regular cadre issuing of appointment orders.

• Induced breeding techniques of Indian Major Carps (Catla, Rohu, Mrigal) & Exotic Carps
• Modern hatchery designs: Eco-hatchery, circular breeding pool & incubation pool engineering
• Nursery, rearing & grow-out pond management: Liming, manuring, water stocking density & plankton bloom control
• Intensive culture systems: Biofloc Technology (BFT), Recirculating Aquaculture Systems (RAS) & cage culture in reservoirs
• Freshwater pearl culture, ornamental fish breeding, and coldwater fisheries potential in sub-Himalayan belts

• Taxonomy, morphology & anatomical adaptations of commercially important freshwater & estuarine teleosts
• Population dynamics: Length-weight relationship, condition factor (K), age & growth determination via scale/otolith
• Inland aquatic resources of Bihar: Riverine fisheries (Ganga, Gandak, Kosi, Son), wetlands, oxbow lakes (Maun/Chaur)
• Eutrophication, aquatic weed infestation control, aquatic bioindicators, and conservation of endangered aquatic fauna (Gangetic Dolphin)

• Common viral, bacterial, fungal, and parasitic diseases in freshwater aquaculture (Epizootic Ulcerative Syndrome - EUS, Fin/Tail rot, Dropsy, Argulosis, Dactylogyrus)
• Diagnostic tools: Water microbiological assays, histopathology, PCR diagnostics & therapeutic antibiotic stewardship
• Water quality parameters: Dissolved Oxygen (DO), pH, alkalinity, hardness, TAN (Total Ammonia Nitrogen), and nitrite toxicity management
• Biosecurity protocols, quarantine norms for exotic seed introduction, and immunostimulants in aquafeeds

• Post-mortem biochemical changes in fish muscle: Rigor mortis, autolysis, rancidity, and microbial spoilage mechanisms
• Fish preservation methods: Chilling, freezing, IQF, salting, smoking, canning, and drying kinetics
• Quality control & sanitation: HACCP principles, FSSAI regulations, EU export standards, and sensory evaluation techniques
• Value-added fishery products: Fish cutlets, fish fingers, surimi, fish oil extraction, and fish silage from processing discards

• Site selection, soil mechanics, and civil layout design for fish farms, dikes, sluice gates & drainage systems
• Aeration equipment: Paddlewheel aerators, aspirators, diffused aeration systems, and energy efficiency metrics
• Classification of fishing gears: Gill nets, trammel nets, cast nets, drag nets, and traps used in inland waters
• Netting materials, synthetic fibres, breaking strength, twine numbering systems, and selective gear designs

• Pradhan Mantri Matsya Sampada Yojana (PMMSY): Operational guidelines, subsidy patterns, and infrastructure funding models
• Mukhya Mantri Matsya Vikas Yojana (Bihar): Pond renovation, input subsidies for fish farmers, and women self-help group assistance
• Role of Fishermen Co-operative Societies (Matshyajivi Sahyog Samiti) in waterbody leasing and credit linkage
• Extension methodologies: Frontline demonstrations, participatory rural appraisal (PRA), kisan goshthi, and digital agri-portals (OFMS Bihar)

• Holders of 4-year Bachelor of Fisheries Science (B.F.Sc.) from ICAR-recognized agricultural/fisheries universities seeking regular cadre appointment in Bihar.
• Candidates seeking Level 7 (₹44,900 basic pay) positions with 35% horizontal reservation for women (77 posts).

• Candidates with 3-year B.Sc. Zoology or general B.Sc. degrees without ICAR-recognized 4-year B.F.Sc. accreditation.
• Candidates exceeding the maximum age limit of 37 years (UR male) or 40 years (BC/EBC/UR female) as on 01-08-2026.

Download and print the official gazette syllabus to tick off every individual sub-topic systematically during your study schedule.

Dedicate the first 2 hours of daily study to your weakest subject before moving to familiar revision topics.

Conduct weekly timed self-assessment tests and compute your net score strictly applying the official negative marking formula.

Review official commission corrigenda and model answer keys to understand recurring question structures and accepted representations.

Ensure all mandatory identity documents and category certificates are renewed within the prescribed financial year validity window.

Are general B.Sc. Zoology or M.Sc. Zoology candidates eligible for BTSC Advt 28/2026?

No. As per the statutory Bihar Fisheries Service Recruitment Rules and BTSC Advt 28/2026, ONLY candidates possessing a 4-year Bachelor of Fisheries Science (B.F.Sc.) degree from an Agricultural University or Fisheries College recognized by the Indian Council of Agricultural Research (ICAR), New Delhi are eligible. General B.Sc. / M.Sc. Zoology degrees without a 4-year professional B.F.Sc. cannot be considered.

Can candidates from states outside Bihar apply for BTSC Fishery Extension Officer?

Yes. Eligible candidates holding a 4-year B.F.Sc. from any recognized Indian ICAR institution who are non-domiciles of Bihar can apply under the Unreserved (General) category. However, age relaxation and vertical/horizontal reservation benefits (EWS, BC, EBC, SC, ST, WBC, and Women 35% reservation) are strictly restricted to permanent residents/domiciles of Bihar.

How is the 25-mark contractual experience weightage calculated by BTSC?

Candidates who have served as Fishery Extension Officers or equivalent technical staff on a contractual basis under the Dairy, Fisheries and Animal Resources Department of Bihar receive 5 marks for every 1 full year of verified completed service, up to a maximum ceiling of 25 marks. The experience certificate must be in the prescribed proforma countersigned by the competent District Fisheries Officer (DFO).

What are the minimum qualifying marks in the BTSC Fishery Extension Officer CBT?

In compliance with Bihar Government Department of Personnel & Administrative Reforms (General Administration Dept) guidelines, candidates must score at least: General/UR: 40%, Backward Classes (BC): 36.5%, Extremely Backward Classes (EBC): 34%, and SC / ST / Women / PwBD: 32% in the Computer Based Test to be considered for merit listing.

What is the gross monthly pay and in-hand salary for BTSC Fishery Extension Officer in 2026?

The post is classified under 7th CPC Pay Matrix Level 7 with a starting basic pay of ₹44,900. Adding Dearness Allowance at 50% (₹22,450), House Rent Allowance (₹3,592 to ₹12,123 depending on rural block, district headquarters, or Patna municipal limits), and Medical Allowance (₹1,000), the gross monthly salary ranges from ₹72,942 to ₹81,473. The expected net in-hand salary post NPS pension (10%) and GIS deductions is approximately ₹65,200 to ₹73,800 per month.

What documents are required during online form submission on btsc.bihar.gov.in?

Applicants must keep scanned copies ready: 10th Matriculation certificate (for DOB proof), 4-year B.F.Sc. degree certificate or provisional degree certificate (PDC) along with all semester marks transcripts, ICAR accreditation certificate copy of university, domicile certificate of Bihar (if claiming reservation), non-creamy layer (NCL) certificate for BC/EBC, EWS certificate for 2026-27, contractual experience certificate (if applicable), and passport photograph and signature conforming to BTSC specifications.