This video was taken at the Sea World, California, USA Life history and reproduction Males reach sexual maturity between four and seven years, while females mature at between six and nine years. The white whales can live more than 50 years. Female belugas typically give birth to one calf every three years. Gestation lasts 12 …
Category: Gallery
Permanent link to this article: https://fishconsult.org/?p=4997
Jul 22 2012
White whale, Delphinapterus leucas (Introduction, description, distribution, feeding) – Video
This video was filmed at the Sea World, California, USA (June 2012) Review: Abdel Rahman El Gamal (Founder of the website and video channel) Introduction: The beluga whale and white whale are the common names for the Arctic and sub-Arctic cetacean species, Delphinapterus leucas, which belongs to family “monodontidae”. We preferred to use white whale to avoid confusion with …
Permanent link to this article: https://fishconsult.org/?p=4992
Jul 12 2012
Rural aquaculture in Malawi (Establishment, management and impacts)
Credit: Gaves Mulaleya (Malawi) It is estimated that there are about 4,000 small-scale fish farmers in Malawi. A typical farmer has one or two small pond and harvests about 13 kg of fish per annum. Ponds are normally constructed by family members and sometimes with help of hired labour. The majority of farmers use maize …
Permanent link to this article: https://fishconsult.org/?p=4374
Permanent link to this article: https://fishconsult.org/?p=4365
Permanent link to this article: https://fishconsult.org/?p=4360
Jul 11 2012
Natural spawning of African catfish (Clarias gariepinus) in Egypt – Video
Video credit: Lylian Lugobola (Tanzania) Information: Ismael Radwan (Egypt) Text: Abdel Rahman El Gamal This video shows the natural spawning of African catfish, Clarias garepinus which is claimed (by many producers) to be easier and more economical as compared to artificial spawning especially in the light of its reasonable productivity. …
Permanent link to this article: https://fishconsult.org/?p=3453
Jul 07 2012
Electric eel, Electrophorus electricus (characteristics, distribution, feeding, reproduction, electric charges) – Video
This video was filmed in the Freshwater Aquarium, Sea World, California, USA (June 2012) Review: Abdel Rahman El Gamal (Founder of the website and video channel) Characteristics: Despite its name, electric eel is not true eel but more closely related to catfishes. They have elongated, cylindrical, non-scaled bodies, typically growing to about 2 meters in length, and …
Permanent link to this article: https://fishconsult.org/?p=4271
Jul 06 2012
Marketing of fresh fish in South Sudan
Credit: Juma Frezar (South Sudan) The two photos show a traditional marketing of fresh fish in Bor city, South Sudan. One of the photos was taken in front of the fisherman’s home whereas his catch of “weer”, Gymnarchus niloticus is offered for sale whereas the second photo shows a small pile of “Nauk”, Heterotis niloticus …
Permanent link to this article: https://fishconsult.org/?p=4250
Jul 06 2012
Manual sexing of Nile tilapia, Oreochromis niloticus in Gabon (in French)
Credit: Charles Ibinga Maganga (Gabon) Tri et sexage manuel du Tilapia nilotica, élevage monosexe des males et femelles dans des étangs sépares; la mise en charge des males se font à raison de 2,2 poissons /m² à SIAT/Bitam; les alevins sont prélevés dans les étangs de prégrossissements tôt le matin, sont sexes et charge dans les …
Permanent link to this article: https://fishconsult.org/?p=4240
Jul 05 2012
Collection of African catfish, Clarias gariepinus in Ntem Minvoul Valley in Gabon (in French)
Credit: Charles Ibinga Maganga (Gabon) Clarias gariepinus, récoltés par les femmes dans la vallée du Ntem à Minvoul (ville rurale, au nord du Gabon). Ces silures (poissons-chats) sont péchés avec des pièges à poissons (panier conique fait à l’aide des roseaux pour les eaux peu profondes) lors des périodes de remontée d’eau, en début des …
Permanent link to this article: https://fishconsult.org/?p=4149