Welcome back!
In the past few posts, we have been talking mainly about seafood obtained through fishing. However, we must not forget about aquaculture which contributes largely to meet rising demands for seafood.
Mainly in response to the implications of overfishing, aquaculture gained momentum in the 21st century and in 2016, food fish production by aquaculture amounted to 80 million tonnes (source). The upside is, since the late 1980s, fish production via capture has remained relatively stagnant whereas aquaculture has been on a steady increase and, according to the Food and Agriculture Organisation (FAO), it accounts for 47% of global fish production in 2016. Currently, one-quarter of all fish consumed by us is the product of aquaculture.
Now you may wonder, what’s so great about aquaculture?
Aquaculture is the aquatic equivalent of the hotly discussed topic of agriculture in class. This suggests the presence of human intervention in order to increase production (source). The benefits of aquaculture are numerous and they include:
- Of course, the tremendous increase in seafood production
- More job opportunities
- Lower environmental impacts as compared to production by capture
- It can happen anywhere and everywhere! (here’s a video on fish farming in Uganda.)

Aquaculture Research Facility within the Centre for Aquaculture and Veterinary Science at Temasek Polytechnic. ST PHOTO: ONG WEE JIN
Does it seem like aquaculture is a one-shot-problem-solved for the increasing demand for seafood?

Sorry but Trump says you’re wrong…source
Well, we all know that life is never a bed of roses. There’s no such thing as a ‘Pareto improvement’ when we continually demand from nature.
The diversity of production systems leads to an underlying paradox: aquaculture is a possible solution, but also a contributing factor, to the collapse of fisheries stocks worldwide. (source)
Aquaculture may have many benefits but along with it throngs a list of impacts. Overuse of chemicals such as antibiotics, escapees can interbreed with wild populations altering the genetic pool, the spread of disease, and it goes on… (source)
Intensive farming (the higher the intensity, the more controlled the environment) allows humans to manipulate the fish’s breeding cycle – controlling when the fish spawns and its frequency – and also produces way more fish in a relatively small area. Its high stocking density is coupled with increased waste generation and risk of disease transmission. Other than its environmental impacts, overcrowding has also sparked discussions regarding ethics.

How would you feel if you were one of the fishies here? source
Sincerely,
Sheryl
October 4, 2019 at 2:30 pm
Hello Sheryl! I enjoy reading your weekly posts that are adequately concise yet informative. Definitely intriguing to think about whether aquaculture is considered a solution to feed the seafood demand or just a temporary plaster. Looking forward ro more of your posts!
October 4, 2019 at 2:33 pm
Hey there,
thanks for reading! Glad that you’re enjoying the posts and really hope that you’ll be encouraged to do your part as a steward of this planet. (:
– sheryl
October 24, 2019 at 12:39 pm
Hi Sheryl,
I was wondering why, when you briefly covered some of the negative impacts of aquaculture, you chose not to mention the contribution to mangrove deforestation ?
Also, do you have a sense of the extent to which aquaculture may be contributing to the environmental crisis or whether it is, on the balance, making the situation better ?
Thanks,
jc
October 26, 2019 at 1:32 pm
Hi Dr. Coleman,
When I mentioned the negative impacts, I guess I was thinking more about its implications on the marine ecosystem. But now that you mentioned about mangrove deforestation, it got me to think about the ecosystem services that are lost as aquaculture is one of the main drivers for mangrove deforestation, especially in SEA. According to this article though there is some sort of mangrove rehabilitation project which is something to be hopeful for!
To be completely honest, I really am quite conflicted about whether aquaculture is ultimately making better or worsening the environmental crisis. But taking into account humanity’s increasing demand for seafood and the ocean’s dwindling fish stocks, I think at least for now, aquaculture is the better option in order to meet the demand for seafood. In the long-run, I feel that cutting down would be the best option though it definitely is not going to be easy to convince or motivate people to do so.
-sheryl