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Ram cichlid

Ram cichlid
Mikrogeophagus ramirezi imported from Columbia.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Cichlidae
Subfamily: Geophaginae
Genus: Mikrogeophagus
Species: M. ramirezi
Binomial name
Mikrogeophagus ramirezi
(G. S. Myers & Harry, 1948)
Synonyms
  • Apistogramma ramirezi G. S. Myers & Harry 1948
  • Microgeophagus ramirezi (G. S. Myers & Harry 1948)
  • Papiliochromis ramirezi (G. S. Myers & Harry 1948)
  • Papilochromis ramirezi (G. S. Myers & Harry 1948)

The ram cichlid, Mikrogeophagus ramirezi, is a species of freshwater fish endemic to the Orinoco River basin, in the savannahs of Venezuela and Colombia in South America. The species has been examined in studies on fish behaviour and is a popular aquarium fish, traded under a variety of common names, including ram, blue ram, German blue ram, Asian ram, butterfly cichlid, Ramirez's dwarf cichlid, dwarf butterfly cichlid and Ramirezi. The species is a member of the family Cichlidae and subfamily Geophaginae.

Wild ram cichlids are often more colorful than the tank-bred fish, which suffer from poor breeding and also being injected with hormones for more color, although this makes as many as one in four males infertile. Male specimens of the ram usually have the first few rays of the dorsal fin extended, but breeding has made some females also show this. When close to spawning, female rams have a pink or red blush on the abdomen. Females also have a blue sheen over the spot just below the dorsal fin, or a sparse scattering of blue scales in the upper half of the dark spot, and males do not show this. Males reach a maximum length of 10 cm, and females are usually slightly smaller.

The natural habitat of M. ramirezi is warm (25.5-29.5 °C, 78-85 °F), acidic (pH 5.2-6.7) water courses in the llanos savannahs of Venezuela and Colombia. The water is generally slow-flowing, contains few dissolved minerals, and ranges in colour from clear to darkly stained with tannins. The species is typically found where cover in the form of aquatic or submersed vegetation is available.


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Wikipedia

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