goldfish

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goldfish,

freshwater fish, genus Carassius, of the family Cyprinidae, popular in aquariums and ponds. Native to China, it was first domesticated centuries ago from the wild form, an olive-colored carplike fish up to 16 in. (40 cm) long. It reverts to this type when it escapes from domestication and has been known to hybridize with the carpcarp,
hardy freshwater fish, Cyprinus carpio, the largest member of the minnow family; it is also known as the common carp. A native of Black, Caspian, and Aral sea basins of Eurasia, the carp has been introduced widely elsewhere in the world and has become so well
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. Breeders have developed bizarre varieties with fan, fringe, or veil tails and sometimes with double or triple fins. Some have bulging "telescope" eyes. The majority of those bred commercially are known as scaled goldfish and have a metallic sheen of red, gold, white, silver, or black. The rarer forms, which are called scaleless, actually have transparent scales and appear in bright red, blue, shades of purple, and calico patterns. Marketed goldfish range in length from 1 to 4 in. (2.5–10 cm). In pools, they are beneficial as well as ornamental, since they feed on mosquito larvae; however, their carplike feeding habits make them a nuisance in lakes and streams. Goldfish are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Actinopterygii, order Cypriniformes, family Cyprinidae.

Goldfish

 

the domesticated form of the silver carass (Carassius auratus) and common aquarium fish. The first mention of goldfish breeding in China dates from the tenth to the 12th centuries; in 1611 it was brought to Portugal and later to England. In Japan the goldfish was first bred in the 16th century, and it appeared in Russia at the end of the 17th century. Selection by mutation and hybridization have produced a large number of breeds with attractive coloration, long fins, and protruding eyes, including the comet, shubunkin, veiltail, telescope, stargazer, lionhead, oranda, and pearl. When kept under proper conditions, goldfish reach sexual maturity in their second year; during spawning the female lays up to 2,000–3,000 eggs. The fish can live from 15 to 35 years in an aquarium. The goldfish feeds on moths, daphnids, shredded meat, earthworms, and various cereals and bread.

REFERENCES

Molchanov, A. V. Akvarium liubitelia, 4th ed. Moscow, 1948.
Il’in, M. N.Akvariumnoe rybovodstvo. Moscow, 1965.

A. A. SVETOVIDOVA

goldfish

[′gōl‚fish]
(vertebrate zoology)
Crassius auratus. An orange cypriniform fish of the family Cyprinidae that can grow to over 18 inches (46 centimeters); closely related to the carps.

goldfish

1. a freshwater cyprinid fish, Carassius auratus, of E Europe and Asia, esp China, widely introduced as a pond or aquarium fish. It resembles the carp and has a typically golden or orange-red coloration
2. any of certain similar ornamental fishes, esp the golden orfe (see orfe)
References in periodicals archive ?
3"E locality Installation maximum date depth (m) Ain Zaouia 1985 26 Draa El Mizan 1974 23 Taksebt 2002 72 Djebla 1969 19 Table 2: List of freshwater fish of Great-Kabylia (1: present, empty box: absent) Stady sites Water courses Takdemt Draa Ben Tamda (Tak) Khedda (Tam) (Dbk) Anguillidae Species code Anguilla anguilla Aang 1 1 1 Centrarchidae Micropterus salmoides Msal lupeiidae Alosa alosa Aalo 1 1 Alosa fallax Afal 1 1 Cyprinidae Alburnus alburnus Aalb Aristichtys nobilis Anob Barbus setivimensis Bset 1 1 Carassius auratus Caur Ctenopharyngodon Cide idella Cyprinus carpio Ccco 1 1 var.
A comparison of artificial and natural foods and their combinations in the rearing of goldfish, Carassius auratus (L.
Freshwater imported ornamental fishes Carassius auratus, Xiphophorus maculatus and Poecilia reticulata were examined for fungal infection.
2 8 -- - Scaridae Sparisoma cretense 4 15 -- - Sphyraenidae Sphyraena viridensis 1 4 -- - Freshwater fish Cichlidae Oreochromis mossambicus 1 4 -- - Cyprinidae Carassius auratus -- -- 7 9.
Carassius auratus Introducida Decada de 1930 o (Linnaeus) antes 2.
Family Common name/Species/Origin Cyprinidae common carp (Koi variety) Cyprinus carpio (native range: Russia, China, India) goldfish Carassius auratus (native range: central Asia, China, Japan) Cobitidae oriental weatherfish Misgurnus anguillicaudatus (native range: Northeastern Asia, Myanmar, China) Poeciliidae guppy Poecilia reticulata (native range: Venezuela, Barbados, Trinidad, northern Brazil, Guyanas) sailfin molly Poecilia latipinna (native range: U.
Contenido de selenio en musculo despues de un periodo de suplementacion con una fuente organica (seleno-metionina) Cantidad Contenido en Especiea Semanas Se (b) musculo (c) Referencia Salmo salar 8 1,20 0,48 58 2,20 1,57 3,20 2,51 Ictalurus punctatus 9 0,05 0,12 51 0,07 0,28 0,11 0,36 0,25 0,45 0,45 0,54 Carassius auratus 4 0,05 5,90 46 gibelio 0,55 14,20 Carassius auratus 4 0,05 6,10 57 gibelio 0,55 13,52 Morone chrysops x 6 1,22 0,33 45 M.
The results of the present study are found to be in accordance with previous studies carried out by some investigators who found Artemia as an excellent diet for newly hatched fish (Seale, 1933), Shrimp larvae (Hudinaga, 1942), Carassius auratus (Abi-Ayad and Kestemont,1994) and fresh water prawn larvae (New, 1995).
Los resultados de este trabajo se basan en el estudio de doce carpas Carassius auratus Linneo, adultos, hembras y machos, de 12 a 15 centimetros de longitud, de color cafe olivaceo, procedentes del lago de Xochimilco.
Carassius auratus (Linnaeus), 1758 (Common name: Gold fish)
This silver-grey chi, better known as goldfish, Carassius auratus, occasionally appeared as a xanthic form.