Profile image
Story Views

Last Hour:
Last 24 Hours:

Growing meaty fish

Monday, February 27, 2017 21:51
% of readers think this story is Fact. Add your two cents.
Sparus aurata Sardegna.jpg

Image of a gilthead sea bream by Roberto Pillon – via Wikimedia Commons

Similar to humans, muscle growth in fish is increased with exercise. Unlike humans, however, teleost fish are able to continue growing in length as well as weight throughout their lives. This type of meat, I mean muscle, growth happens in two ways: 1) muscle cells get bigger and 2) new muscle cells form. Researchers at the University of Barcelona in Spain wanted to know what effect moderate sustained swimming would have on the muscles of young fingerling gilthead sea bream, a type of teleost fish (image above). Their findings were published in the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology.

The fish were placed in either a tank with normal water flow (350 liters per hour) for voluntary movements or moderate flow sufficient for the fish to swim at a moderate intensity (700 liters per hour). After 5 weeks, they found that muscles towards the head of the fish began to remodel and grow new blood vessels to supply the new muscle cells that were also being produced. These anterior muscles are known for producing powerful and fast contractions and their study shows that they can indeed be changed by swimming during a time when the fish are normally rapidly growing anyway. In contrast to the anterior muscles, those closer to the tail of the fish showed closer to normal growth patterns. Since these fish are important in aquaculture, being able to optimize their growth and the quality of their meat is important.


EJ Vélez, S Azizi, E Lutfi, E Capilla, A Moya, I Navarro, J Fernández-Borràs, J Blasco, J Gutiérrez. Moderate and sustained exercise modulates muscle proteolytic and myogenic markers in gilthead sea bream (Sparus aurata). American Journal of Physiology – Regulatory, Integrative and Comparative Physiology. [In Press] doi:10.1152/ajpregu.00308.2016


We encourage you to Share our Reports, Analyses, Breaking News and Videos. Simply Click your Favorite Social Media Button and Share.

Report abuse


Your Comments
Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

Top Stories
Recent Stories



Top Global


Top Alternative




Email this story
Email this story

If you really want to ban this commenter, please write down the reason:

If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.