Promoting science and education in Africa.

Experts Explain Likely Causes of Incidence of Dead Fishes at Bonny-Andoni Shorelines as Idaa Obolo Cautions Residents

7 min read

The recent incidence of large quantities of dead fishes found on the shores of Bonny-Andoni and other Ijaw communities in the Niger Delta region has posed another environmental challenge even as the nation battles the COVID-19 pandemic. The incidence reportedly began since the last week of March 2020.

A preliminary investigation carried out by a Community Survey Team of Bonny indigenes under the aegis of Finima Youths Congress (FYC) on Wednesday and Thursday, 15th-16th April, 2020 revealed that the species of fish affected is mainly ‘Croaker‘ popularly known as ‘Broke Marriage’ and called ‘Onah’ in both Ibani and Obolo dialects.

The affected areas include shorelines and waterways of Amariari, Lighthouse, River-7, Agaja, Uku-Mbi, Mbisu 1, Mbisu 2, and Ifoko communities in Bonny LGA; Oyorokoto and surrounding communities in Andoni LGA as well as several communities along the Atlantic shoreline across the area referred to as the Gulf of Guinea which include: Ondo, Delta, Bayelsa, Rivers and Akwa Ibom States in Nigeria.

The Survey Team also gathered that the fishes were seen always turning up fresh in the mornings along the shores, some popping up on the surface of the water alive and some struggling to stay alive and then they die. The said fishes, suspected to be infected, begin to rot from the tail as against the head and then turn green; when spread out on the fire to dry, unlike normal fish, these do not thoroughly dry up, instead they would disintegrate or scatter.


AdasiScience Environmental Monitoring Team in collaboration with Living Science Foundation (LSF) engaged a team of seasoned environmental scientists to analyze possible environmental-health risks associated with the ‘dead fishes incidence’ with a view of sensitizing the concerned citizens appropriately.

According to the Team’s analysis led by Dr. Chukwuka Azubuike Victor, a University of Ibadan trained ecotoxicologist/conservation scientist and Prof. Olaniyi Komolafe of the Department of Zoology, OAU, the likely causes of large amount of ‘fish kill’ are chemical pollution, environmental disturbance and bacterial infection.

The ecotoxicologists pointed out this particular incidence involving only a single-species (croaker) is rarely caused by pollution. Chemical pollution often results in the death of multiple species of fishes in large quantities.

Dr. Chukwuka noted that documented evidence from other parts of the world indicates that such occurrences are attributable to sharp changes in environmental parameters like oxygen and pH, due to marked environmental events like heavy rains, massive flood/ runoff from urban areas. “This species of fish which forms shoals (large mobile clusters) may have encountered sudden unfavorable conditions during their inter-habitat migration that usually takes place during the warm months of March -June”, he submitted.

On the observation that some of the fish kept popping up on the surface of the water and some were alive when sighted only to be struggling to stay alive and then they die, he explained that the fishes likely experienced respiratory distress prior to death, which is consistent with the likelihood of a recent environmental event or perturbation (natural or anthropogenic) that affected oxygen concentrations in surface water.

On why the fish begins to rotten from the tail as against the head, the experts explained that this indicated a fin rot effect of bacterial infection, most probably opportunistic infection ongoing before the fish died. Such infection is commonly brought on by bad water conditions, injury, poor diet, stress, or as a secondary infection in a fish which is already stressed by other disease. When the fish begins to turn green as they get rotten, this suggests to be an advanced effect (or post humus effect) of the fin rot disease.


Since the survey report revealed that within 2 nautical miles from Lighthouse the fish were all dead but beyond that and as far as the Fairway Buoy many of the fishes were sighted alive only to die later, this implies that the affected fish population were far from shallow waters when affected by the environmental incidence. This rules out the possibility of land runoff, and increases the chances of natural causes, like heavy rains causing sudden drop in oxygen, by mixing high oxygen water layers with low oxygen water layers (ocean water is stratified).


As gathered, even before the attention of the government was drawn to the incidence, some residents of the affected areas, who believed that God has blessed them with natural palliative provision in this COVID-19 lockdown era, had already used the affected fishes for domestic consumption (meals) while fishermen and traders dried and sold some to their customers in Bonny, Andoni communities, Kaa, and Port Harcourt markets, making ‘cool cash’! Our respondent, confirmed that some ‘smart fishermen’ made up to one hundred thousand (N100,000) from the outbreak, which they termed ‘daily manna’.

The big question now is what will happen to those who eat the ‘infected fishes’? Some, even feared that the fishes might have been contaminated by the corona virus! Before, you panic and start swallowing unprescribed drugs, Get this clear, now! Read on!!

The environmental biologists clearly stateed that only a reliable laboratory (forensic test) results on dead fish samples can confirm the actual cause(s) of the incidence leading the death of the fishes. they further explained that if the outcome of the test rules out that the fishes were killed by chemicals, the only worry will be bacteria flora present in the fish tissue, since decay would have commenced prior to being washed ashore.

However, they gave useful insights that the likely reason why the fishes disintegrate or scatter and do not thoroughly dry up when spread out on the fire to dry, unlike fish that is caught alive and brought to the shore, is likely a depiction of advanced bacterial activity in the tissue of dead fish.

Interestingly, it has been proven that local fish processing techniques e.g. drying and smoking, to a large extent, deal with bacteria in aquatic food, however such food will be far less nutritious compared to fishes that were caught alive with a net. In such case, health risks may be quite minimal.


Reports indicated that the attention of the Rivers State Commissioner for Environment, Dr. Igbiks Tamuno has been drawn to the incidence, who had commenced investigation into the matter and that the community survey team had also sent samples of the ‘infected fishes’ and water to Prof. Ibitoru Hart for laboratory analysis in Port-Harcourt. While these steps are quite commendable, the laboratory tests results on the fish samples should be made public and where there exists dire consequences, the public should be properly sensitized with immediate effect.

In addition, our team suggests that if this incidence persists, physico-chemical parameters be taken around the site where dying fish were last observed, areas at intervals towards the high sea and at intervals towards the shore. If a gradient of parameters can be established from the shoreline to the high sea, it could help narrow down probable cause of the fish kill.

The State government should embark on intermittent sea-clean up exercise to remove dead fishes from the shore, and those floating offshore. This will prevent secondary hazards to other coastal species. For instance, decaying floating fish will lower oxygen concentrations in surface water, which can affect the survival of other species.

On the long term, ecological mapping of local fauna is imminent for risk assessment and conservation of local fauna. Other relevant federal and state MDAs including Federal Ministries of Environment, NESREA, Institute of Fisheries Research, etc. should intervene as a matter of urgency, not only to curb the incidence but to take proactive measures to forestall reoccurrence where applicable.

Also Engr. Elijah C. Nwabuisiaku, a top environmental enforcement officer, stressed the need for the state government and other relevant authorities in riverine areas to carry out regular ‘Clean Ocean Initiatives‘ to get rid of water pollutants and invasive species, in line with global best practices to achieve sustainable marine environment as well as protect the main source of livelihood of the people in the affected areas.



Meanwhile, the Chairman, Idaa Obolo Forum, a socio-cultural umbrella body of Obolo ethnic nationality (worldwide), Sir Cyrus Nkangwung, in a statement issued in Port-Harcourt, cautioned all Obolo sons and daughters as well as other residents in the affected areas to strictly adhere to government’s directive to desist from the trade and consumption of the ‘infected dead fishes’ until the order is reversed. Mr. Cyrus, is also the Zonal Director, NOSDRA, Port-Harcourt Zonal Office and an experienced zoologist (environmental biologist).

In a similar development, Andoni Progressive Union (APU), Abuja Chapter Chairman, Mr. Inwon L. Fingesi also enjoined Andoni (Obolo) indigenes and other Ijaw people dwelling in the affected communities to stay safe. He emphasized, “At the moment, selling, buying and eating of ‘Croaker Fish’ whether fresh or dried should be avoided, until the investigations are concluded and a new directive issued by relevant government authorities; may ‘Awaji’ (God) shield all Obolo people and others throughout this challenging COVID-19 period”.

AdasiScience is run by an environmental analyst and science educator, Mr. Isijaan Pace Adasi-Ene, an Andoni (Obolo) son while Living Science Foundation is coordinated by Prof. Joshua Ojo, an environmental researcher of international repute at Obafemi Awolowo University (OAU), Ile-Ife. Visit:, contact: 09020114273.

148 thoughts on “Experts Explain Likely Causes of Incidence of Dead Fishes at Bonny-Andoni Shorelines as Idaa Obolo Cautions Residents

  1. Thanks on your marvelous posting! I genuinely enjoyed reading it, you happen to be a great author.I will be sure to bookmark your blog and will come back in the foreseeable future.
    I want to encourage one to continue your great job, have a
    nice day!

  2. Hello! This is my first visit to your blog! We are a collection of volunteers and starting a new project in a community in the same niche.
    Your blog provided us valuable information to work on. You have done a extraordinary job!

  3. Magnificent beat ! I wish to apprentice while you amend your site, how can i subscribe for
    a blog website? The account helped me a acceptable deal. I had been a
    little bit acquainted of this your broadcast offered bright
    clear concept

  4. Hi there! This is my first visit to your blog!

    We are a team of volunteers and starting a new initiative in a community in the same niche.

    Your blog provided us useful information to work on. You have done a extraordinary job!

  5. A lot of thanks for each of your labor on this web page. My mum takes pleasure in carrying out
    investigations and it is obvious why. A lot of people learn all relating to the powerful mode you give
    efficient things by means of your blog and welcome response from others on this area of interest
    so our favorite simple princess is without a doubt becoming educated so much.

    Enjoy the rest of the year. You are doing a
    superb job.

    Also visit my web blog Cruz

  6. Great site you have here but I was curious if you knew of any community forums that cover the same topics
    discussed in this article? I’d really love to be a
    part of community where I can get suggestions from other experienced individuals that share
    the same interest. If you have any suggestions, please let me know.

    Bless you!

    Feel free to visit my blog Green Leaf Hills CBD Review

  7. I trulу love your site.. Great colors & theme. Diɗ you develop this ѡebsite yourself?
    Please reply ƅack аs I’m planning to create my οwn website
    and would love to learn where you got this from or еxactly what the theme iѕ called.
    Many thanks!

  8. This is the right web site for anyone who wants to understand
    this topic. You realize so much its almost tough to argue with you (not that
    I really would want to?HaHa). You certainly put a brand new spin on a subject that’s been discussed
    for ages. Wonderful stuff, just excellent!

    Also visit my site – Compoise 360X CBD Gummies

  9. Hmm is anyone else encountering problems with the images on this blog
    loading? I’m trying to figure out if its a problem
    on my end or if it’s the blog. Any feedback would be greatly appreciated.

    my web-site – Pellamore

  10. It’s a pity you don’t have a donate button! I’d definitely donate to this fantastic blog!
    I guess for now i’ll settle for book-marking
    and adding your RSS feed to my Google account.
    I look forward to brand new updates and will share this site with my Facebook group.

    Chat soon!

    Here is my web-site: epicwin test –

  11. Does your blog have a contact page? I’m having problems locating it but,
    I’d like to send you an e-mail. I’ve got some ideas for your blog you might be interested in hearing.

    Either way, great website and I look forward to seeing it
    improve over time.

    Feel free to visit my site … 3win8 11

  12. My spouse and I stumbled over here coming from a different website and thought I may as well check things out.
    I like what I see so now i am following you. Look forward to going
    over your web page repeatedly.

  13. I just like the helpful info you supply for your articles.

    I will bookmark your blog and take a look at again here
    regularly. I’m quite sure I will learn lots of new stuff proper
    right here! Good luck for the next!

    My web site – Felipa

  14. May I simply just say what a relief to find somebody that truly understands what
    they are talking about on the web. You actually
    understand how to bring a problem to light and make it important.

    A lot more people really need to look at this and understand this side of the story.
    It’s surprising you are not more popular because you certainly possess the gift.

    My web page: Viag Rx

  15. I was wondering if you ever thought of changing the structure
    of your site? Its very well written; I love what youve got to say.
    But maybe you could a little more in the way of content so people could connect with it better.
    Youve got an awful lot of text for only having one or 2 pictures.
    Maybe you could space it out better?

    My site :: kiosk 918kaya

  16. Thanks so much for giving everyone an exceptionally remarkable chance to read from this site.
    It’s usually so nice and as well , full of fun for
    me and my office friends to visit your site at the least 3 times a week
    to learn the fresh items you will have. Of course, I am just usually amazed concerning the
    tremendous points you give. Certain 4 tips in this posting are surely the most
    effective I’ve had.

    Feel free to visit my blog: Jolt Alpha Male Enhancement

  17. Today, I went to the beachfront with my children. I found a sea shell and gave it to my 4 year
    old daughter and said “You can hear the ocean if you put this to your ear.” She put the shell to her
    ear and screamed. There was a hermit crab inside and it pinched her ear.

    She never wants to go back! LoL I know this is entirely off topic but I had to tell someone!

  18. Hi there I am so delighted I found your weblog, I really found you by accident, while I was researching
    on Aol for something else, Regardless I am here now
    and would just like to say many thanks for a remarkable post and a all round entertaining blog (I also love the theme/design), I don’t have time to read it
    all at the moment but I have book-marked it and also
    included your RSS feeds, so when I have time I will be back to read more, Please do keep up
    the great job.

    my homepage – Jolt Alpha Reviews

  19. My wife and i felt very more than happy Louis managed to complete his researching by way of the
    ideas he got through the web site. It’s not at all
    simplistic to just continually be handing out concepts which
    many others have been selling. And now we grasp we now have you
    to thank for this. These illustrations you made, the simple blog menu, the relationships your site assist to create –
    it’s got most superb, and it is facilitating our
    son in addition to us believe that this theme is pleasurable,
    which is exceptionally pressing. Thank you for everything!

    Also visit my webpage – CoolEdge Portable AC Reviews

  20. Excellent post however I was wondering if you could write a litte more on this topic?

    I’d be very grateful if you could elaborate a little bit further.

    My webpage … Dell

  21. What i don’t understood is in fact how you are not actually much more
    neatly-preferred than you may be right now. You are so intelligent.
    You recognize thus significantly in relation to this topic,
    made me in my view believe it from numerous numerous angles.
    Its like men and women don’t seem to be interested except
    it is one thing to accomplish with Woman gaga! Your personal stuffs excellent.
    Always care for it up!

    Visit my page … Compoise 360X CBD

  22. It’s a pity you don’t have a donate button! I’d certainly
    donate to this superb blog! I guess for now i’ll settle for book-marking and adding
    your RSS feed to my Google account. I look forward to brand new updates and will talk about this site with my Facebook
    group. Chat soon!

    my blog post :: Nitro Strive Nitric Oxide Booster

  23. Can I just say what a comfort to uncover someone that really understands what they’re talking about on the net.
    You certainly realize how to bring an issue to light and
    make it important. More people must look at this and understand this side of your story.

    I can’t believe you are not more popular since you surely have the gift.

    Here is my webpage: Alpha Extracts CBD Oil

  24. Greetings! Very helpful advice in this particular post! It is the little
    changes that will make the biggest changes. Thanks
    a lot for sharing!

    Feel free to surf to my blog post;

  25. Can I just say what a relief to uncover a person that truly knows what they’re discussing
    over the internet. You definitely understand how to bring an issue to light and make it important.
    More and more people ought to check this out and understand this side of
    your story. I can’t believe you aren’t more popular since you definitely possess the gift.

    Also visit my website: Nutri Blendx Reviews

  26. Hola! I’ve been following your web site for a long time now and finally
    got the courage to go ahead and give you a shout out from Humble Texas!
    Just wanted to tell you keep up the great job!

    Here is my page … Re ViVium

  27. Hi there, just became aware of your blog through Google, and found that
    it is really informative. I’m gonna watch out for brussels.
    I’ll be grateful if you continue this in future. Lots of people will be benefited
    from your writing. Cheers!

    My web site: Nitro Strive Nitric Oxide (

  28. Thank you so much for giving everyone an update on this topic on your web site.
    Please understand that if a brand-new post appears or in case any
    changes occur to the current submission, I would want to consider
    reading more and finding out how to make good usage of those methods you share.
    Thanks for your efforts and consideration of other folks
    by making this website available.

    Feel free to surf to my web site

  29. Howdy! This is kind of off topic but I need
    some guidance from an established blog. Is it difficult to set up your own blog?
    I’m not very techincal but I can figure things out pretty fast.
    I’m thinking about setting up my own but I’m not sure where to begin. Do you
    have any ideas or suggestions? Cheers

    Visit my blog post … Cool Portable AC Reviews

  30. I seriously love your site.. Very nice colors & theme.

    Did you build this site yourself? Please reply back as I’m attempting
    to create my very own site and want to learn where you
    got this from or exactly what the theme is named. Cheers!

    my web-site – Krista

  31. Definitely believe that which you stated. Your favorite
    reason seemed to be on the web the easiest thing to
    be aware of. I say to you, I definitely get irked while people think about worries that they plainly do not know
    about. You managed to hit the nail upon the top and defined out the whole thing without having side-effects , people
    could take a signal. Will probably be back to get more. Thanks

    Also visit my web-site; Keto BHB Plus

  32. I truly love your blog.. Excellent colors & theme.
    Did you make this web site yourself? Please reply back
    as I’m hoping to create my very own website and want to learn where you got this from or just what the theme is named.

    Feel free to visit my web page;

  33. Please let me know if you’re looking for a author for
    your weblog. You have some really great posts and I think I would
    be a good asset. If you ever want to take some of the load off, I’d really like to write some content for your blog in exchange for a link back to
    mine. Please send me an e-mail if interested. Kudos!

    Here is my web blog ::

  34. Thanks for the marvelous posting! I definitely enjoyed reading it,
    you could be a great author.I will ensure that I
    bookmark your blog and will often come back in the future.
    I want to encourage that you continue your great writing,
    have a nice afternoon!

    Feel free to surf to my blog post … Keto Body Pills Review

  35. Hmm is anyone else having problems with the images on this blog loading?
    I’m trying to figure out if its a problem on my end or if it’s the blog.
    Any feed-back would be greatly appreciated.

  36. Thank you for your blog post. Jones and I are saving to get a new e-book
    on this subject and your short article has made us all to save money.

    Your ideas really responded all our questions.
    In fact, greater than what we had thought of just before
    we ran into your amazing blog. My partner and i no longer nurture doubts and a troubled
    mind because you have attended to our own needs right here.

    my page :: Dermal Pearle Ageless Moisturizer

  37. Hi there! This post couldn’t be written any better! Going through this post reminds me of my previous roommate!
    He constantly kept preaching about this. I’ll forward this article to him.
    Fairly certain he’s going to have a good read. I appreciate you for sharing!

  38. It’s a shame you don’t have a donate button! I’d without a doubt donate to this excellent
    blog! I suppose for now i’ll settle for bookmarking and adding your RSS feed to my
    Google account. I look forward to fresh updates and will share this
    blog with my Facebook group. Chat soon!

  39. My programmer is trying to convince me to move to .net
    from PHP. I have always disliked the idea because of the costs.
    But he’s tryiong none the less. I’ve been using WordPress on a variety of websites for
    about a year and am anxious about switching to another platform.
    I have heard great things about
    Is there a way I can transfer all my wordpress content into it?

    Any help would be greatly appreciated!

  40. Very good written post. It will be valuable to everyone who utilizes it, as well as me.
    Keep up the good work – i will definitely read more posts.

    Also visit my web blog Terri

  41. We are a group of volunteers and starting a new scheme in our community.
    Your site offered us with valuable information to work
    on. You’ve done a formidable job and our whole community will be grateful to you.

  42. Hey! Quick question that’s totally off topic.
    Do you know how to make your site mobile friendly? My web site
    looks weird when browsing from my iphone4. I’m trying to
    find a template or plugin that might be able to resolve this problem.
    If you have any recommendations, please share. Appreciate it!

    Also visit my site –

  43. hey there and thank you for your info – I’ve definitely picked up anything new from right
    here. I did however expertise several technical points using this site, since I experienced
    to reload the site lots of times previous to I could get it to load correctly.

    I had been wondering if your web host is OK? Not that I’m complaining, but sluggish loading instances times will often affect
    your placement in google and could damage your quality score if advertising and marketing with Adwords.

    Anyway I’m adding this RSS to my e-mail and can look out for a lot
    more of your respective interesting content. Make sure you update this
    again soon..

    Here is my website CutSlim Keto Pills

  44. certainly like your website however you have to check the spelling on several of your posts. Many of them are rife with spelling problems and I to find it very troublesome to inform the reality nevertheless I will surely come again again.

  45. Hello there, I found your site via Google whilst searching for a comparable matter, your website came up, it seems to be good.
    I have bookmarked it in my google bookmarks.
    Hi there, just became alert to your blog through Google, and
    found that it’s truly informative. I’m gonna be careful for brussels.
    I’ll appreciate in case you continue this in future. Many people might be benefited out of your writing.
    Cheers! ps4 ps4

  46. This design is incredible! You certainly know how to keep a reader entertained. Between your wit and your videos, I was almost moved to start my own blog (well, almost…HaHa!) Excellent job. I really loved what you had to say, and more than that, how you presented it. Too cool!

  47. Hey There. I found your blog using msn. That is a very smartly written article. I will make sure to bookmark it and return to read extra of your useful info. Thank you for the post. I’ll definitely return.

  48. I’ve been browsing online more than 3 hours today, yet I never found any interesting article like yours. It’s pretty worth enough for me. Personally, if all website owners and bloggers made good content as you did, the net will be a lot more useful than ever before.

  49. What i don’t realize is in fact how you are not really much more neatly-appreciated than you may be right now.

    You’re so intelligent. You recognize therefore considerably on the subject of this matter,
    produced me personally imagine it from a lot of numerous angles.

    Its like men and women are not fascinated except it’s one thing to accomplish with Girl gaga!
    Your own stuffs outstanding. At all times take care of it up!

    Also visit my web-site;

  50. Greetings! Quick question that’s entirely off topic. Do
    you know how to make your site mobile friendly? My weblog looks weird when viewing from my iphone4.
    I’m trying to find a template or plugin that might be able to correct this issue.
    If you have any suggestions, please share.

    With thanks!

    my site :: central air conditioner

Leave a Reply

Your email address will not be published. Required fields are marked *