LED Lighting for Fish Farming
LEDSHIGHBAY LLF0110A
We all love seeing delicious fish lining our dining tables.
In order to preserve the limited
fishery resources for the future, efforts and research are currently being advanced in Japan in
the fish farming industry.
Stanley has been offering its proprietary technologies with the
aim of “contributing to a sustainable food supply through the power of
light.”
Amid the efforts of various companies, the “optical
aquaculture technology using LEDs,” in which Stanley has participated, has been
attracting attention in recent years.
In experiments conducted by irradiating fish with green
LEDs jointly developed with Kitasato University and the Kanagawa Prefectural Fisheries
Technology Center, it was found that the LEDs promoted the growth of marbled sole. As a result,
this technology is already being put to practical use.
“Light” promotes the growth of fish?
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What kind of lighting can promote the growth of fish?
“Optical aquaculture” increases the growth rate of cultured flatfish such as flounder and pacific flounder by exposing them to green LEDs and other light sources.
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Stanley Electric participated as a joint researcher in this optical aquaculture project and developed a specially designed indoor floodlight “LLF0110A.”
The growth of farmed fish was promoted by irradiating them with green LEDs, as opposed to filter-type fluorescent lamps. -
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Growth rate of flounder and sole 1.6 times faster!!
Stanley Electric Co., Ltd. has been participating in joint research with Kanagawa Prefectural Fisheries Technology Center and Kitasato University.
We irradiated juvenile fish during breeding with green LED light and demonstrated that the irradiation accelerated growth, resulting in an average weight increase of approximately 1.6 times compared to normal breeding.
This results in a turnaround time for shipments that is three months earlier than usual.
The shortened shipping time also contributes to significant cost reductions.
As for the taste, the flounder raised in fish-farming lighting seems to be well received, “just as tasty as the conventional product.”
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LLF0110A emitting green LED light
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Irradiating young marbled sole with green LED light.
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LLF0110A illuminating an experimental aquarium from the ceiling
Why is flatfish activity stimulated by green light?
Although it can be inferred from the
research results, Professor Akiyoshi Takahashi of Kitasato University's School of Marine
Biosciences suggested that “It is likely that the green light is similar to the green light
that reaches flatfish in their natural habitat on the seafloor, and this increases their
activity and appetite.”
This technique was validated on flounder and spotted halibut, and
on marbled sole.
In a one-year, one-month breeding test, the average body weight of the
LED-exposed flounder was approximately 1.6 times greater than that of normally bred
flounder.
Estimated production costs during the breeding period showed that while normal
breeding costs 1,435 yen per kg of fish, the area with the LEDs cost only 1,254 yen per kg
of fish, a decrease of 181 yen (about 13%).※1
1 According to [Agriculture, Forestry and Fisheries Research Center,
Research Now] vol. 87
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Specially designed floodlight for harsh environments
This is a specially designed LED floodlight that meets the demand for a maintenance-free solution for harsh indoor environments that utilize seawater.
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It provides uniform luminescence using non-filter type green and red LEDs.
It is IP65 rated for environments exposed to water. -
- Fish growth promotion effect
- The use of this lighting in fish farming encourages fish to eat more food than usual, resulting in faster growth.
- Color variation
- The main color is green, which has a proven track record of promoting growth in
flatfish, including subspecies.
In addition to green, red is also available, and the color of lighting can be selected according to breeding needs.
- Waterproof, dustproof, and salt-resistant construction
- It is IP65 rated for environments exposed to salt water.
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Green LEDs reduce costs by 3 million yen
Towa Marine Products has been installing Stanley’s LEDSHIGHMAST LLF0110A Green LED floodlights at their aquaculture farm since May 2021.
Case Study: Towa Marine Products
There are five aquariums, with 15 floodlights per aquarium, for a total of 75 LED floodlights mounted 180 cm from the water surface.
Tatsuya Sakamoto, who is in charge of the flounder farm, said, “They’ve become so active that they look like different fish.” It used to take well over a year to get juvenile fish to grow to the 1 kg weight required for shipping, but now it is possible to get them to the same weight in just 9 to 10 months.
It required some initial investment to introduce the floodlights, but because LED lights are cheap to run, it is now possible to ship the fish out faster and reduce labor and power costs. The use of the floodlights has reduced costs by approximately 3 million yen a year.
Towa Marine Products
Towa Marine Products’ fish farming business is based in Saiki City, Oita Prefecture,
a town with a thriving fishing industry, where 80% of the flounder farmed in the
prefecture is produced.
In 2021, Towa Marine Products began a new initiative to promote the growth of
flounder using the green LED light emitted by our LEDSHIGHMAST (LLF0110A) LED
floodlights.
specification
Color variation
Luminescence color : Green, Red
Power consumption : 43 W (Green 100 VAC)
Input voltage : 100 to 240 VAC
LED luminous flux : 4,300lm(Green)
Specific energy consumption efficiency : 100lm/W(Green)
Ambient operating temperature : -10 to 35°C
Weight : 3kg
Waterproof and dustproof performance : IP65
LED lifetime : 40,000 hours (70% luminous flux maintenance factor)
Power source : Separately installed
Inquiries
Product website
Please visit the product website for more detailed specifications and options.
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