The knifefishes (also knife fishes) are ray-finned fish that are elongated in shape and whose fins run the length of the body, with the resulting appearance of a knife. There are two orders in which they occur; the Gymnotiformes and the Osteoglossiformes[?].
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... are female. The population density of the community is 18 inhabitants per km².
External links
Ludvika (http://www.ludvika.se) - Official site
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