john blay

Professor · Department of Fisheries and Aquatic Sciences

Professor of Zoology, Department of Fisheries and Aquatic Sciences

In their own words

Fisheries Biology
Aquaculture
Aquatic Ecosystems Health

Publications: 601981–2024
Citations: 699to those papers
h-index: 16i10-index 23
Field-weighted impact: 0.821.00 is the world average
World top 10%: 4%1 of 27 scored papers
Open access: 33%9 of the 27 whose access is recorded

In 2016–2025: 21 publications, 220 citations to them, h-index 7.

Download CV:PDFWord

Google Scholar shows 945 citations, h-index 18 and i10-index 27 (411 citations and h-index 11 since 2021), as of October 3, 2026. It also counts theses, books and web pages, so it runs higher.

By year

Papers, and the citations to them

Publications, left axisCitations to that year’s papers, right axis2026 still in progress

Citations received each year

PeerfordGoogle Scholar

To all their work, old papers included. Google Scholar also counts citations from theses, books and web pages, so its line runs higher.

What they work on

From the classification of each paper

Subfields

Aquatic Science2033%
Global and Planetary Change1525%
Ecology1220%
Nature and Landscape Conservation1220%
Earth-Surface Processes23%
Physiology23%
Atmospheric Science12%
General Agricultural and Biological Sciences12%
Genetics12%
Health, Toxicology and Mutagenesis12%

Life Sciences
Physical Sciences

Topics most written on

Fish Biology and Ecology Studies19
Marine and fisheries research14
Fish Ecology and Management Studies9
Aquatic Ecosystems and Biodiversity8
Coastal wetland ecosystem dynamics3
Coral and Marine Ecosystems Studies3
Fish biology, ecology, and behavior3
Marine Bivalve and Aquaculture Studies3
Aquaculture Nutrition and Growth2
Coastal and Marine Dynamics2
Oil Palm Production and Sustainability2
Reproductive biology and impacts on aquatic species2

Who they write with

39 co-authors, here and elsewhere

Same unit
Same university
No African institution

The 30 most frequent of 39 co-authors. Circle area and line width are papers written together; the strongest ties sit nearest. “No African institution” is anyone the papers place outside Africa’s institutions; Peerford records affiliations only there.

Where their co-authors are

15% of their 27 papers with recorded affiliations have a co-author abroad

papers co-written1111222Home

Most frequent partner countries

Nigeria2
Germany1
United States1

Papers with at least one author in that country.

Institutions written with most

Council for Scientific and Industrial ResearchGH3 papers
University of IlorinNG2 papers
Leibniz Centre for Tropical Marine ResearchDE1 paper
University of Rhode IslandUS1 paper
University of Education, WinnebaGH1 paper
Jasikan College of EducationGH1 paper

Where they publish

Journal of Fish Biology4
Journal of the Ghana Science Association4
University of Cape Coast4
West African Journal of Applied Ecology4
Ghana Journal of Science3
Academic Journal of Life Sciences2

Development goals addressed

From each paper’s title and abstract

14Life below water24
2Zero hunger1
6Clean water and sanitation1
13Climate action1

Most cited

Biodiversity threats assessment of the Western Region of Ghana
john blay
The integrated coastal and fisheries governance (ICFG) initiative Ghana
201058 citations
Status of the small pelagic stocks in Ghana in 2019
john blay, Kobina Yankson
Scientific and Technical Working Group. USAID/Ghana Sustainable Fisheries Management Project (SFMP). Narragansett, RI: Coastal Resources Center, Graduate School of Oceanography, University of Rhode Island. GH2014_SCI083_CRC
202048 citations
The Effect of some Selected Pesticides on the Growth and Reproduction of Fresh Water Oreochromis niloticus, Chrysicthys nigrodigitatus and Clarias gariepinus

Recent publications

All publications →Download: BibTeX · RIS

Stock assessment and reproductive biology of bluespotted seabream Pagrus caeruleostictus (family: Sparidae)
Evans Kwasi Arizi, john blay, Joseph Aggrey-Fynn, Michelle Naa Kordei Clottey
Aquaculture Fish and Fisheries14
20241 citationOpen access · Gold
Mangrove resource utilization and impacts in the Pra and Kakum estuaries of Ghana
Denis Worlanyo Aheto, Gertrude Lucky Aku Dali, john blay
Regional Studies in Marine Science
20237 citationsOpen access · Bronze
Ghana Case Study Two
Denis Worlanyo Aheto, Elizabeth Effah, john blay
Challenges in Tropical Coastal Zone Management13
20231 citation
Carbon Stocks Assessment in a Disturbed and Undisturbed Mangrove Forest in Ghana
Denis Worlanyo Aheto, Emmanuel Acheampong, john blay, Joshua Adotey
Sustainability14
202231 citationsWorld top 10%Open access · Gold
Maturity length, fecundity and spawning season of Atlantic chub mackerel Scomber colias in the coastal waters of Ghana (west-central Gulf of Guinea)
Isaac Okyere, john blay
African Journal of Marine Science14
20223 citations
The biological characteristics of the Nile tilapia (Oreochromis niloticus) in the Weija Reservoir, Ghana
john blay, Kobina Yankson
International Journal of Bonorowo Wetlands614
20220 citationsOpen access · Hybrid
An update of the reproductive biology of sardinellas (Family: Clupeidae) in the coastal waters of Ghana
john blay, Noble Kwame Asare
Fish Res
20217 citations
Effect of Different Doses of 17?-Methyltestosterone on Masculinization, Pre-Post Treatment Growth Parameters and Condition Factor of Sarotherodon Melanotheron in Pond System
john blay
Academic Journal of Life Sciences
20212 citations
Effect of Different Doses of 17 Α -Methyltestosterone on Masculinization, Pre-Post Treatment Growth Parameters and Condition Factor of Sarotherodon Melanotheron in Pond System
john blay, Joseph Aggrey-Fynn
Academic Journal of Life Sciences2
20211 citationOpen access · Diamond
Status of the small pelagic stocks in Ghana in 2019
john blay, Kobina Yankson
Scientific and Technical Working Group. USAID/Ghana Sustainable Fisheries Management Project (SFMP). Narragansett, RI: Coastal Resources Center, Graduate School of Oceanography, University of Rhode Island. GH2014_SCI083_CRC
202048 citations

Put this list on your own website

Paste this into any web page. It shows the ten newest papers and updates itself.

<iframe src="https://scholar.ucc.edu.gh/embed/publications?person=4afccca4-4baf-4153-a89f-9bbc78fffbd6" title="Publications: john blay" loading="lazy" style="width:100%;height:560px;border:0"></iframe>