The online application window for BTSC Fishery Extension Officer Recruitment 2026 (Advt. No. 28/2026) concluded on 23 October 2026. Online registration and fee payment portals are now closed. Registered candidates are advised to keep their application details secure and check the syllabus and preparation guidelines below for the upcoming Computer Based Test (CBT).
YuvaResult.in operates as an independent educational reporting service. This guide synthesizes regulatory provisions of BTSC Advertisement No. 28/2026 issued by the Bihar Technical Service Commission, Patna. Aspirants must verify official terms directly on the Commission's official web portals (btsc.bihar.gov.in and btsc.pariksha.nic.in) before submitting applications.
Role & Professional Duties of Fishery Extension Officer in Bihar
The Fishery Extension Officer (मत्स्य प्रसार पदाधिकारी) is a pivotal technical gazette-level cadre post within the Animal and Fisheries Resources Department (Fisheries Directorate), Government of Bihar. Officers in this role serve at the block and sub-divisional levels to implement state and central aquaculture development initiatives, including the flagship Pradhan Mantri Matsya Sampada Yojana (PMMSY) and the Bihar State Fisheries Development Scheme.
Core field responsibilities of the Fishery Extension Officer include:
- Aquaculture Technology Transfer: Providing hands-on scientific training to fish farmers on modern aquaculture techniques, including Biofloc technology, Recirculating Aquaculture Systems (RAS), and high-density fish culture.
- Hatchery Supervision & Quality Control: Inspecting registered fish seed hatcheries, ensuring quality brooder maintenance, disease monitoring, and certified fish spawn distribution across assigned districts.
- Beneficiary Scheme Scrutiny: Verifying farmer applications for pond construction subsidies, cold-chain transport units, fish feed mills, and aerator installations financed under government schemes.
- Inland Water Body Management: Facilitating sustainable leasing, cooperative society formation, and stocking of public reservoirs, oxbow lakes (mauns), and wetlands throughout Bihar.
Essential Educational Qualification & ICAR Recognition Standards
In accordance with the Bihar Fisheries Service Cadre Rules and Advertisement No. 28/2026, candidates must strictly possess the following academic qualification on or before the application deadline:
Mandatory Degree Requirement
A regular, full-time 4-Year Bachelor of Fisheries Science (B.F.Sc.) degree conferred by a College of Fisheries affiliated with an Agricultural University recognized by the Indian Council of Agricultural Research (ICAR), New Delhi.
⚠️ Important Notice on Ineligible Qualifications:
General 3-year B.Sc. degrees with Zoology, B.Sc. in Aquaculture, B.Sc. Industrial Fish & Fisheries, or distance/correspondence degrees are not equivalent to the professional 4-year B.F.Sc. programme and will not be accepted by BTSC during Document Verification.
Bihar Domicile Policy & 35% Horizontal Reservation for Women
The recruitment complies with the reservation guidelines laid down by the General Administration Department (GAD), Government of Bihar:
35% Horizontal Reservation for Female Candidates
A total of 77 posts out of the 231 vacancies are horizontally reserved across categories for women possessing permanent domicile in the State of Bihar. Female candidates must produce their permanent residence certificate to claim this reservation benefit.
Candidates from Other States
Indian citizens from outside the State of Bihar are fully eligible to apply for this recruitment. However, regardless of their native category, out-of-state candidates will be considered strictly under the Unreserved (General) category and cannot claim fee concession, age relaxation, or reservation quotas.
BC / EBC Non-Creamy Layer (NCL) & EWS Validity
Candidates claiming BC or EBC category reservation must submit a valid Non-Creamy Layer (NCL) certificate issued by the competent revenue authority of Bihar. EWS candidates must furnish a valid Income & Asset Certificate issued for the relevant assessment year. Married female applicants must ensure their caste/NCL certificate is issued mentioning their father's name and address, as required by Bihar Government rules.
Selection Process: 100-Mark Composite Merit Formula Explained
Selection for the Fishery Extension Officer post is strictly merit-based, determined through a transparent 100-mark composite evaluation system without an interview:
Candidates appear for a 100-question Computer Based Test. The marks obtained out of 100 are scaled down proportionally to a maximum weightage of 75 marks (Formula: CBT Scaled Marks = Actual CBT Score × 0.75).
Candidates with verified contractual service in the Fisheries Directorate, Government of Bihar, receive 5 marks per completed working year, up to a maximum cap of 25 marks. Service of less than 6 months in a split year is rounded off proportionally.
Total Merit Score Calculation:
Final Composite Merit (100) = [Actual CBT Score out of 100 × 0.75] + [Contractual Experience Marks up to 25]
Fresh graduate candidates without prior contractual experience are evaluated entirely on their scaled CBT score out of 75 marks.
CBT Examination Syllabus & High-Yield Topic Breakdown
The 100-mark Computer Based Test comprises two dedicated sections: Fisheries Science (80 Questions) and General Studies & Bihar GK (20 Questions). Aspirants should focus their preparation on the following high-priority subject domains:
Aquaculture & Hatchery Management
Freshwater aquaculture systems; composite fish culture; induced breeding techniques for Indian Major Carps (IMC) and exotic carps; nursery and rearing pond preparation; water quality parameters (DO, pH, alkalinity, hardness); aquatic weed and predator control.
Fish Nutrition, Pathology & Health Management
Nutritional requirements of cultivable finfish and shellfish; artificial feed formulation and FCR calculation; bacterial, fungal, viral, and parasitic diseases in warmwater fishes; diagnosis, prophylactic measures, and biosecurity protocols.
Inland Fisheries Resources & Limnology
Riverine, lacustrine, and wetland (Chaur & Maun) fisheries of Bihar; ecology of Gangetic drainage system; fish stock assessment; conservation of endangered fish fauna; cage culture and pen culture in open water bodies.
Post-Harvest Technology, Processing & Economics
Principles of fish preservation (icing, freezing, curing, canning); quality assessment and spoilage mechanisms; fish value addition; cold chain logistics; fisheries economics and cooperative marketing systems in Bihar.
General Studies & Bihar State Awareness
Current national and state affairs; geography, agricultural profile, and river systems of Bihar; environmental ecology; basic Indian Polity and General Science.
Document Verification (DV) Checklist & Advisory
Candidates shortlisted based on the composite merit list must present original documents along with two sets of self-attested photocopies before the BTSC verification committee:
- Printed copy of the final submitted online application form and e-fee payment receipt.
- Original Class 10th (Matriculation) Certificate & Marksheet for Date of Birth verification.
- Original 4-Year B.F.Sc. Degree Certificate and semester-wise consolidated marksheets.
- Accreditation / Affiliation proof establishing ICAR recognition of the degree-awarding college or university.
- Permanent Residential (Domicile) Certificate of Bihar issued by a competent Sub-Divisional or Circle Officer.
- Caste / Non-Creamy Layer (NCL) / EWS certificate issued on or before the application cutoff date.
- Contractual Experience Certificate counter-signed by the designated Controlling Officer of the Bihar Fisheries Directorate (for candidates claiming experience marks).
- Valid government-issued Photo Identity Proof (Aadhaar Card, Voter ID, PAN Card, or Passport).
- Four recent passport-size colour photographs matching the uploaded image.