Scientific Officer · Fisheries Biotechnology Division

Sabuj Biswasসবুজ বিশ্বাস

I study the bacterial communities of Bangladesh's rivers, fish and farms: from the riverbank to the sequencer to the statistics. I also write the software that makes the analysis reproducible.

National Institute of Biotechnology, Savar, Dhaka, Bangladesh

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Sabuj Biswas
Circular tree, drawn the way ggtree draws them
Peer-reviewed papers
5
Citations
86
h-index
3
River sites sequenced
14

Citation metrics from Google Scholar, October 2026.

01 · Research

Microbes where water, fish and people meet

Bangladesh lives on its rivers and ponds. Its rivers carry industrial and sewage pollution, and its fish farms are among the most productive in the world. I use sequencing and culture to ask which bacteria live in these waters, how pollution and farming reshape them, and which of them matter for fish health and antimicrobial resistance.

River & environmental microbiomes

16S rRNA amplicon profiling of river water and sediment along urban pollution gradients, analysed with compositional statistics.

Buriganga–Turag rivers: 28 samples, 14 sites

Fish & shrimp microbiomes

How the gut microbiome differs between wild and farmed animals, and where antibiotic-resistance genes turn up along the coast.

Hilsa shad · Penaeus monodon

Fish genomics & pathogens

Mitochondrial genomes of farmed catfish, and genome-based profiling of the bacterial pathogens behind disease outbreaks in pangas farms.

Pangasius pangasius mitogenome

Reproducible bioinformatics

Scripted QIIME 2, DADA2 and R pipelines where every reported number traces back to the code and the raw reads.

R · Python · Bash · Linux

03 · Publications

Papers

  1. 2026

    Sediment and water microbiomes of the Buriganga and Turag Rivers along an anthropogenic pollution gradient in Dhaka, Bangladesh

    Biswas S, Hasan MK, Mim MA, Sultana S, Hasan MM, Bhuiyan MSI, Ahmed MS, Hossain MS

    BMC Microbiology Under reviewFirst author

  2. 2026

    Complete mitochondrial genome sequence of yellowtail catfish Pangasius pangasius

    Hasan MM, Mim MA, Ahmed MS, Biswas S

    Microbiology Resource Announcements 15(7): e01366-25 DOI ↗

  3. 2026

    Antimicrobial resistance and gut microbiome profiles in wild and cultured shrimp (Penaeus monodon) from the coast of the northern Bay of Bengal, Bangladesh

    Ferdous J, Islam SMR, Chakma K, Hasan MM, Tanni AA, Ahmed R, Sikder U, Biswas S, Siddiki AZ, Crandall KA, Rahnavard A, Hussain MH, Sharifuzzaman SM, Chowdhury MSN, Mannan A

    Environmental Monitoring and Assessment 198(7): 722 DOI ↗

  4. 2024

    Microbiome pattern and diversity of an anadromous fish, hilsa shad (Tenualosa ilisha)

    Biswas S, Foysal MJ, Mannan A, Sharifuzzaman SM, Tanzina AY, Tanni AA, Sharmen F, Hossain MM, Chowdhury MSN, Tay ACY, Islam SMR

    Molecular Biology Reports 51(1): 38 First author DOI ↗

  5. 2022

    Investigating the nutritional profile and bacteriome diversity in Bangladeshi sour yogurt

    Tanzina AY, Hoque MN, Mannan A, Foysal MJ, Rumi MH, Biswas S, Bhuiyan JJ, Siddiki AZ, Islam MS, Tay ACY, Islam SMR

    Biocatalysis and Agricultural Biotechnology 44: 102451 DOI ↗

  6. 2022

    Dysbiosis of oral and gut microbiomes in SARS-CoV-2 infected patients in Bangladesh: elucidating the role of opportunistic gut microbes

    Rafiqul Islam SM, Foysal MJ, Hoque MN, Mehedi HMH, Rob MA, Salauddin A, Tanzina AY, Biswas S, Noyon SH, Siddiki AZ, Tay A, Mannan A

    Frontiers in Medicine 9: 821777 DOI ↗

Full and current list on Google Scholar, ORCID and ResearchGate.

04 · Path

Experience & education

  1. Dec 2023 – now

    Scientific Officer

    Fisheries Biotechnology Division, National Institute of Biotechnology

    Leads 16S rRNA amplicon studies of river microbiomes and contributes to genome studies of fish and their pathogens.

  2. 2019 – 2023

    Research Member

    Disease Biology & Molecular Epidemiology (DBME) Research Group, University of Chittagong

    Microbiome studies of hilsa shad, shrimp, fermented food and COVID-19 patients, under Prof. Adnan Mannan and Prof. S. M. Rafiqul Islam.

  3. 2020

    M.S. (Thesis), Genetic Engineering & Biotechnology

    University of Chittagong · CGPA 3.69 / 4.00

  4. 2019

    B.Sc. (Honours), Genetic Engineering & Biotechnology

    University of Chittagong · CGPA 3.54 / 4.00

  5. May 2019

    Research Intern

    Microbial Biotechnology Division, National Institute of Biotechnology

05 · Toolkit

Bench to code

Wet lab

  • Bacterial isolation
  • Pure culture
  • Biochemical ID
  • DNA extraction
  • PCR
  • Gel electrophoresis
  • RT-PCR

Sequencing & genomics

  • 16S rRNA amplicons
  • QIIME 2
  • DADA2
  • Cutadapt
  • BLAST
  • MEGA
  • Phylogenetics

Statistics & figures

  • R
  • tidyverse
  • ggplot2
  • phyloseq
  • vegan
  • PERMANOVA
  • MaAsLin 2
  • sf maps

Computing & software

  • Linux & Bash
  • Python
  • Git
  • conda
  • Flutter
  • Next.js
  • Supabase
  • Kotlin

06 · Beyond the bench

Software people use every day

The habits that keep an analysis honest (tests, version control, clear data models) also make good apps. I design, build and maintain these end to end.

SmartPrep BD

A Bengali exam-preparation platform for university admission and job exams: Android app, website and server, with a Python pipeline that turns PDF question papers into clean data.

admission questions
6,529
automated tests
1,089
  • Flutter
  • Next.js
  • Supabase
  • Python

Tohobil তহবিল

A private, bilingual money app for Bangladesh: cash, bank and mobile wallets in one place. Works offline, with fingerprint lock and encrypted backups to the user's own Google Drive.

  • Kotlin
  • Jetpack Compose
  • Room

07 · Contact

Open to collaboration on aquatic microbiology, fish health and research software.

sabujbiswas2015@gmail.com

Official: sabuj@nib.gov.bd

Fisheries Biotechnology Division
National Institute of Biotechnology
Ganakbari, Ashulia, Savar, Dhaka 1349, Bangladesh