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electrophorus

Subject: Science and technology, Physics

An early form of electrostatic generator. It consists of a flat dielectric plate and a metal plate with an insulated handle. The dielectric plate is charged by friction and the metal plate ...

Characins, Catfishes, Carps, and Allies

Characins, Catfishes, Carps, and Allies   Reference library

The Encyclopedia of Underwater Life

Reference type:
Subject Reference
Current Version:
2007
Subject:
Science and technology, Life Sciences
Length:
9,720 words
Illustration(s):
6

...fox (Epalzeorhynchous kallopterus) is a favored aquarium species; 10 The Razorback sucker (Xyrauchen texanus) has a very limited distribution in the western USA, and is classed as Endangered; 11 Ghost knifefish (Apteronotus albifrons); 12 Electric knifefish (Electrophorus electricus); 13 Milkfish (Chanos chanos) . The shark catfishes (Pangasiidae), numbering about 21 species, are possibly the most economically important of the Southeast Asian catfish families. In Thailand, Pangasius species have been pond-reared on fruit and vegetables...

Tarpons, Bonefishes, and Eels

Tarpons, Bonefishes, and Eels   Reference library

The Encyclopedia of Underwater Life

Reference type:
Subject Reference
Current Version:
2007
Subject:
Science and technology, Life Sciences
Length:
8,106 words
Illustration(s):
13

...testudineus ) and the totally unrelated Walking catfish ( Clarias batrachus ) of the family Clariidae. Both these types of fishes have pouches above the gill chamber, with linings expanded into convoluted shapes that increase the surface area. The Electric eel ( Electrophorus electricus ), which spends only a small part of its life out of water, can use its gills for aerial respiration, while the mudskippers ( Periophthalmus spp.), which spend a lot of their life out of water, can use their skin. Fishes on land have a problem in keeping cool,...

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