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The Mormyridae, sometimes called "elephantfish" (more properly freshwater elephantfish), are a superfamily of weakly electric fish in the order Osteoglossiformes native to Africa. [1] It is by far the largest family in the order, with around 200 species. Members of the family can be popular, if challenging, aquarium species.
The Ministry of Fisheries and Aquaculture Development and its agencies (the Fisheries Commission and the National Premix Secretariat) work hand in hand with over 80% of the Ministries in Ghana and other entities in order to develop a reliable, disciplined, manageable, and sustainable fisheries sector for Ghanaians.
In 1988 the fish catch was 302,900 tons. In 1991 the catch was 289,675 tons, down from more than 319,000 tons in 1990. [1] Large-scale poaching by foreign vessels has severely depleted fish stocks in Ghana's 200-nautical-mile (370 km) maritime Exclusive Economic Zone, causing major government concern. [1]
This category is for articles about freshwater fish found in West Africa which, for the purpose of this category, is defined as Benin, Burkina Faso, Cape Verde, Ivory Coast, Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Saint Helena, Ascension and Tristan da Cunha, Senegal, Sierra Leone, Togo
Aquaculture (less commonly spelled aquiculture [1]), also known as aquafarming, is the controlled cultivation ("farming") of aquatic organisms such as fish, crustaceans, mollusks, algae and other organisms of value such as aquatic plants (e.g. lotus).
These fish have the ability to produce and analyze weak electric fields through a specialized organ, [40] (electric organ discharges), which Lissmann and coworkers first analyzed in 1958 through several experiments. [53] [54] Such electric fields provide these fish with a specialized sensory system for communication and orientation. [55]
Fishes are a paraphyletic group and for this reason, the class Pisces seen in older reference works is no longer used in formal taxonomy.Traditional classification divides fish into three extant classes (Agnatha, Chondrichthyes, and Osteichthyes), and with extinct forms sometimes classified within those groups, sometimes as their own classes: [1]
A practical guide to improved fish smoking in West Africa, Brownell B., UNICEF (1983) Utilization of Bonga (Ethmalosa fimbriata) in West Africa.A. Jallow, FAO (1994) Impact of adoption in Ghana of an improved fish processing technology on household income, health and nutrition”, Nti C., Plahar W., & Larweh P., International Journal of Consumer Studies 26 (2), 102-108 (2002)