Recirculating aquaculture systems have many advantages that will allow increased farmed fish production in the future. This is especially true for salmon and trout – in locations adjacent to major markets and in a regulatory environment that controls water, wastewater discharge, escapees and land-use.
The expanding land-based aquaculture industry requires skilled staff, and experienced RAS operators remain in demand. However, there are many opportunities at both new and existing facilities for new operators to develop confidence in operating RAS.
The tide is shifting for the aquaculture industry. The global demand for fish production and the uncertainty of offshore aquaculture is a cause of great concern. As a result, it has become critical to implement sustainable inland fish farms utilizing recirculating aquaculture systems (RAS) to increase fish production to meet this global demand.
One aspect of RAS technology that invites skepticism is the “new-generation technology” that’s supposed to have improved to the point where it can be profitable for raising Atlantic salmon to market size.
Following the first part of the series of four articles based on the use of energy in recirculating aquaculture systems (RAS), the question is whether or not we measure energy consumption and how. Is the energy consumed within the system monitored? Do we know where in the system it is mostly consumed? Which factors are affecting such consumption?
Despite its roots as the common carp, Cyprinus carpio, and all that fish means in aquaculture, the koi is not a food fish and is outside the scope of mainstream aquaculture. In recent years however, the koi has become associated with recirculating aquaculture systems (RAS). With the rise of aquaponics, the raising of fish in a RAS providing nutrients to a hydroponic system, some producers are choosing to fuel their plants with koi instead of crop fish like tilapia (Oreochromis spp.) Koi provides the aquaponic producer with many of the benefits of aquaponics while focusing their entire effort on plant production.
The jury is still out on whether land-based Atlantic salmon farming will deliver on its promise of profitability, but intense media attention and industry interest in 2018 have made it all seem like a tipping point has been reached.
MIAMI, Fla. – It's time for the aquaculture industry to realize its potential for sustainable food production to answer the growing demand for food of an increasing world population.
All indications are pointing to more RAS deployments across the globe as markets respond to increasing demand for sustainable food production, and the aquaculture industry realizes its potential to feed a growing global population.
It is an immense privilege to be given this opportunity to have an ongoing discussion with the readers of RAStech about RAS design and the future of aquaculture.
A recently launched Atlantic salmon producer plans to build a network of land-based RAS farms across Europe, Asia and North America with a projected annual production capacity of 260,000 tons of fish.
Aquaculture is relatively new in Mozambique, but the culture of freshwater species such as tilapia has existed for decades. High in protein value and palatability, tilapia are a key focus due to their high growth rate and ability to breed easily and naturally in captivity.
NORWAY – Skretting Aquaculture Research Centre (ARC) recently expanded its Lerang Research Station in Stavanger, Norway to include a “state-of-the-art” recirculation hall. The company says the expansion will enable researchers to conduct precise experiments on its latest closed system feed formulations in strict, closely monitored environmental conditions.
Dubai’s Vikings Label plans to build a large, land-based salmon farm, and has tapped Gråkjær to be its contractor.
The government of Newfoundland and Labrador, Canada, has come out solidly behind Grieg NL Seafarms Ltd's massive aquaculture project with the announcement by Premier Dwight Ball of a $30-million investment from the government.

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