Credit: Abu Sayed Talukder & Zahangir Alam (Bangladesh) and Abdel Rahman El Gamal (Founder of the website)
The inserted picture shows the traditional sun-drying method for fish in Bangladesh in which fish are exposed to sun for a period of 3-7 days depending on season (temperature) as well as type and size of fish; “knife fish”, “Bombay duck loittya” and Chinese pomfret (Rupchanda) are among the most common fish for sun-drying. In coastal areas, fish are sun-dried from mid-October to mid-April.
Fish preservation turns necessary when significant quantity of fresh fish caught everyday remains unsold for variety of reasons including shortage of customers, transportation problems and others. As a result winter is considered to be the peak season for drying fish.
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Permanent link to this article: https://fishconsult.org/?p=12437
Source: www.fishconsult.org
Submitted by: Rory Felix Mamani (Bolivia)
This is the first time to post a video which is not directly related to aquaculture or fishery. However and regardless the language barrier -to me- I enjoyed this video and decided to share it with you. I placed a warning statement in the title “un-related fishery” and so you can choose to watch it or not. I believe that from time to time one needs to see something different.
In this 18-min video, the biodiversity in Bolivia is covered especially birds and some animals and plants. Also, some cultural issues are presented including carnivals.
I decided to post this video hopefully you like it as I did.
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Permanent link to this article: https://fishconsult.org/?p=12435
Review: Abdel Rahman El Gamal (Founder of the website)
The inserted picture was taken in a marine hatchery in Italy in which gilthead seabream and European seabass are reproduced. The simple devices shown on the water surface of the tank are skimmers which trap oil originating from rotifers being fed an enrichment diet. The inflation of swim bladder of the larvae of marine fish is crucial to their wellbeing and survival. Fish larvae have to gulp air to inflate their swim bladders. The existence of oily layer as well as debris on water surface would interfere with the inflation process and its consequences such as negative buoyancy, abnormal swimming, reduced feeding and hence slower growth or even mortality. The surface skimmers shown in the picture trap the grease by blowing air at low pressure tangentially to water surface. Skimmers are periodically cleaned several times per day using a soft paper foil. This process continues for several days during which the inflation of swim bladders takes place.
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Permanent link to this article: https://fishconsult.org/?p=12433
Credit: Carolyn Madalo Chinguo (Malawi)
The inserted picture shows persons carrying live fingerlings in plastic bags. The oxygen added would ensure a safe arrival of transported fish until reaching the fish ponds. The persons belong to the communities that received free fingerlings for their communal fish ponds and they were rushing to the ponds which were nearby for stocking. It may worth mentioning that a major aquaculture development in Malawi has taken place with the assistance of National, Regional and International cooperation partners. The activities, among others, include pond construction and distribution of fingerlings to local communities. The species currently being farmed in Malawi are Tilapia rendalli (chilunguni/ nungutchale), Oreochromis shiranus (makumba/ nkhututu), Oreochromis karongae (chambo) and African catfish, Clarias gariepinus (mlamba).
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Permanent link to this article: https://fishconsult.org/?p=12428
Video submitted by: Rory Felix Mamani (Bolivia)
Description: Abdel Rahman El Gamal (Founder of the video channel)
This short video shows the packing and transporting of harvested fish in ice boxes. Icing of fish is shown in the video. Fish gutting, baking and serving are addressed in the video.
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Permanent link to this article: https://fishconsult.org/?p=12300
Video submitted by: Rory Felix Mamani (Bolivia)
Description: Abdel Rahman El Gamal (Founder of the video channel)
This short video clip presented very quickly the water quality practices in an earthen pond. Even though, the language of the video Spanish, the contents are easy to follow. The main components shown in the clip are pond construction, liming, fish sampling, water quality sampling for pH, transparency and others. In brief, this 1+ minutes was able to bring in Bolivian aquaculture.
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Permanent link to this article: https://fishconsult.org/?p=12422
Credit: Patrick Appenteng (Ghana)
Most of the cage aquaculture in Ghana is practiced in Lake Volta in the Asuogyaman District of the Eastern region. As cage aquaculture continues to boom in this district, more and more people get employment in diverse fields. The insert shows the sowing of cage nets which is done by a fisher folk who had gained employment in this cage farming activity. According to the fisher folk -through the extension officer who was in an extension visit, this net sowing job has improved his livelihood since he can now get at least enough to cater for his family from this job.
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Permanent link to this article: https://fishconsult.org/?p=12419
Being a simple and useful tool, the “Secchi disc” or “Secchi disk” is widely used as a simple tool for measuring the transparency in water bodies including fish ponds. The disk is commonly identified by its circular appearance with its black and white quadrates. The simplicity of the disk goes also to its use that only requires the lowering of the disc into the water until it disappears then raising the disc until it reappears whereas the average of the two readings (disappearance and reappearance) is known as the transparency (or turbidity) of this particular waters. Based on such measurements along with other analysis, management actions could be taken. The credit of the Secchi disc goes to an astrophysicist, Pietro Angelo Secchi (1818-1978) who was the scientific advisor to the Pope and who was requested by the head of the Papal Navy to measure transparency in the Mediterranean Sea. Subsequently, Pietro Angelo Secchi developed the first 30-cm diameter disk which was lowered from the papal yacht, on April 20, 1865. The disk was plain white. There have been several versions to the first disk used by Secchi reaching to the disc of about 20 cm in diameter which –for easier visibility- is divided into four equal sections (quadrants) painted alternately black and white like the attached calibrated rod, PVC pipe or rope such as the ones used at the present.
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Permanent link to this article: https://fishconsult.org/?p=12412
Credit: Makhtar Ndiaye (Senegal)
Un producteur privé associant la production de riz à l’élevage de tilapia des eaux douces à Richard-Toll dans la région de Saint-Louis /Sénégal.
Rizipisciculture est une pratique pas trop fréquente dans cette zone, mais avec une bonne vulgarisation elle pourra prendre un envol, pour vu que les ressources naturelles et humaines sont sur place.
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Permanent link to this article: https://fishconsult.org/?p=12408
This 8-min video was filmed at the sea lion and otter stadium in the Sea World, San Diego, California, USA. The full show is about twice as long as the current video. The interaction between the audience and the performers along with the well- trained sea lions is high as the whole show is entertaining the audience who usually attend earlier and book places through which they can see better.
What is not seen in this show, is the animal rights activists who quite often stand close to the entrance of the Sea World calling to free the animals and turn them to the environments.
In return, the Sea World highlights the effort paid in conserving several of endangered species which are released into wild. They allocate significant live displays for educational purposes, through which visitors learn and even touch selected species of fish. It seems the debate is going to continue between.
You are invited to see this video while your position related to that debate remains yours
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Permanent link to this article: https://fishconsult.org/?p=12402
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