Permanent link to this article: https://fishconsult.org/?p=9593
Oct 17 2013
Credit: Hannibal M. Chavez (Philippines)
The Bureau of Fisheries and Aquatic Resources (BFAR) regularly provides the fisher folk with appropriate hands-on training on various technologies in the aquaculture utilizing high-value species including seaweeds farming, improved fishing, specifically in the construction and proper use of passive gears, post-harvest and value adding, as well as, on resource management and aquatic environment protection.
Permanent link to this article: https://fishconsult.org/?p=9584
Oct 17 2013
Credit: Elsadig Arbab (Sudan)
The three photos show the locally-made feeding facilities used in an African catfish farm in Sudan. The facilities include a feed manufacturing unit capable to produce 1 ton of feed/day and demand feeders of 30 kg/each capacity. The third photo shows the produced feed. The total area of this farm is 31,500 with a 24,000 m2 of water surface.
Permanent link to this article: https://fishconsult.org/?p=9577
Oct 16 2013
Photo credit: To the gentleman who I met once and it is shame to miss his name (thanks friend for the collection you shared with me years ago and forgive my weak memory)
Review: Abdel Rahman El Gamal
This photo shows a cute specimen of blenny found in the Red Sea waters. Regardless the accurate taxonomy of blennies, they share some characteristics including their small size, large eyes and mouths. Their blunt heads often possess elaborate whisker-like structures called cirri. These tropical and benthic fish try to hide in holes, burrow in sandy substrates or inhabit crevices in reefs, or even empty mollusk shells.
Permanent link to this article: https://fishconsult.org/?p=9574
Oct 15 2013
Credit: Eudes Emilio Sanchez (Colombia)
In this picture we see the use a network similar to those used for breeding hens and chickens, is a network of one-inch mesh which surrounds the pond, this prevents the ingress of flying and crawling predators such as birds, flying mammals (bats), marine mammals (otters) and other land animals like bush dogs etc. This network is tied with steel wires. Normally this system of protection is effective for a period of six to eight months depending on the environmental conditions of the area.
Permanent link to this article: https://fishconsult.org/?p=9562
Oct 15 2013
Credit: Elsadig Arbab (Sudan)
The two photos show the culture of African catfish, Clarias garipinus that represents the main cultured species in a fish farm in Sudan. The stocking rate of fingerlings is 7 pieces/m2 whereas fingerlings are either collected from the wild or from hatchery-produced fry through induced breeding. The average initial weight upon stocking varies and could range from 15-45 g. The average targeted weight upon harvest may range from 650 g to 1000 g.
Permanent link to this article: https://fishconsult.org/?p=9556
Oct 15 2013
Credit: Manuel Cano Alfaro (Guatemala)
The first photo shows people collecting the swim-up fry of Nile tilapia (Oreochromis niloticus) from the spawning tanks. Tilapia broodstock are stocked at the ratio of four females for each male. The collected fry are passed to the sex reversal unit which is shown in the second photo. The sex reversal of which targets the production of all-male tilapia follows the established procedures whereas fry are fed on powdered feed containing the male hormone (17-alpha-methyltestosterone) at the concentration of 30mg/kg of feed for 22 days.
Permanent link to this article: https://fishconsult.org/?p=9549
Oct 14 2013
Credit: Ajith Kumara (SriLanka)
The photo shows two gravid females of mud crab (giant mud crab), Scylla serrata. The egg color indicates its ripening stage.
The fattening of mud crab in SriLanka is the usual farming system practiced in earthen ponds. The culture begins with collecting soft shell crabs which are kept in ponds and fed trash fish until the shell hardens and then harvesting is performed. Live mud crab is totally exported to Singapore, Hong Kong while damaged ones are locally consumed. Mud crab enjoy high market value 1 kg = ~ 10-12US$. Harvesting of mud crab in the wild is done by either gill nets, traps or hand picking.
The breeding of mud crab in captivity was achieved in SriLanka in 2011. However, there are still some problems related to their low survival rate whether for mud crab or for orange mud crab (Scylla olivacea).
Permanent link to this article: https://fishconsult.org/?p=9525
Oct 14 2013
Credit: Ajith Kumara (SriLanka)
This photo was taken in the north western region of SriLanka showing and attempt to rescue a killer whale that stranded near sea shore. As the animal still alive, naval officers try to pull the animal to the offshore area. More than 10 whales and dolphins stranding recorded in the country during a year but the reasons are not known. When whales are found alive, The SriLanka National Aquatic Resources Authority (NARA) with the support of the NAVY try to save their lives through trying to pull them in deep water using naval boats. However, the carcasses of the marine mammals are often found although they were pulled to deep sea.
Permanent link to this article: https://fishconsult.org/?p=9516
Oct 14 2013
Credit: Manuel Cano Alfaro (Guatemala)
The photos show the stocking of Pez Blanco (Petenia splendida) in lake Peten Itzá (Guatemala) as a means of preserving this native species. Fry produced for stocking are produced in the facility located in the village “El Remate” with the technical support of the Mission of Taiwan in cooperation with the Guatemalan government as represented by DIPESCA (formerly called UNIPESCA) which is affiliated to the Ministry of Agriculture. Lake Peten Itzá is located in north of Guatemala. Only artisanal fishery is allowed in the lake whereas licensed fishermen/boats operate in the lake.
Stocking of this native species is done to conserve the stocks against overfishing especially this species which is naturally found over all Yucatan Peninsula enjoys a high demand and represent a traditional dish for Guatemalan people. It may worth mentioning that promoting Nile tilapia, Oreochromis niloticus targets to secure fish supply and in the same time to reduce the pressure on the fishery of Pez Blanco.
Permanent link to this article: https://fishconsult.org/?p=9509
