By the way, how much is the fish?*

By Cornelia Kreiss:

To produce a good seafood product according to ecological, welfare and human health aspects we also have to consider the economic side of the coin. The use of sustainable alternative feed, close monitoring of the production conditions or the valorisation of side-stream products is beneficial for a more sustainable production, but will also come at a cost. How high is this cost? Which production benefit or who (the consumer?) will compensate for these costs? What about the whole sector impact?

This slideshow requires JavaScript.

These are very important questions for farmers and the seafood industry in general, which we seek to answer within GAIN. In order to do this on farm-scale we use a so-called “typical farm approach” implemented by the agri benchmark network headed by the Thünen Institute in Germany. This is a micro-economic tool which allows to portray the typical production of a farmed species according to real costs, techniques and other inputs: all of it in great detail. In the end we can estimate, which market returns per kg fish should be achieved in order to stay (as) profitable (as before)!

Kreiss_Troutfarmer

Sustainable production methods themselves already benefit the farmer, resulting in better quality fish that needs less feed to grow to the same size, or achieving higher water quality which might also allow for higher stocking densities. However, such benefits do not always outweigh the full costs that adaptations towards sustainable production might involve. As long as follow-up costs of environmental impacts are not part of the market price (which is admittedly not an easy task to determine!), price differences are at the expense of sustainable products and need a transparent justification.

Originating from Germany, where public awareness and willingness to pay for more sustainable seafood products is higher than in other countries, I am convinced that a good market transparency is the way forward and I am excited to be part of this aim in combination with more sustainable seafood production within GAIN.

*The fish bought by the electro trashers band “Scooter” in the 1990’s and being the name giver for their song “How much is the fish”, cost 3.80 Deutsche Mark and supposedly lived for at least 18 years, which seems to be a quite good deal!

The day of a fish

By Caitlin Stockwell:

Have you ever wondered what the day of a fish looks like? Or what leads to their decision making? Well I have always been curious, and I turned that curiosity into a career path.

I am a PhD student at Dalhousie University studying fish behavior in aquaculture using acoustics. Now what does that actually mean? There are many ways to study fish behavior from putting tags into a fish and tracking an individual’s movement, to using sound to track an entire populations movement. I use both in my research to help understand different aspects of where fish swim and why.

 

This slideshow requires JavaScript.

To make a complicated technology simple, I use acoustics (sounds in the water) to send a sound signal up into the cage and, depending what type of sound is returned, will determine the amount of fish and their location in the cage. This information can be extremely useful to fish farmers as it can help them determine when to start and stop feeding, as well as how their fish respond to other environmental conditions (such as storms or harmful algae blooms).

This slideshow requires JavaScript.

The aim of studying fish movement is to help farmers better understand their fish and assist them in mitigating any stress that could impact the fish’s well-being. By providing this information, we can help make happier, healthier fish to help feed our growing population.