Mikrogeophagus ramirezi


Mikrogeophagus ramirezi
Ramirezi
凤凰

Blue Ramirezi
蓝凤凰

Long Find Blue Ramirezi
长鳍蓝凤凰

Balloon Blue Ramirezi
气球蓝凤凰

Long Fin Balloon Blue Ramirezi
长鳍气球蓝凤凰

Gold Ramirezi
金凤凰

Long Fin Golden Ramirezi
长鳍金凤凰

Balloon Gold Ramirezi
气球金凤凰

Holland Ramirezi
荷兰凤凰

Balloon Holland Ramirezi
气球荷兰凤凰

Cobalt Blue Ramirezi
电光蓝凤凰

Balloon Cobalt Blue Ramirezi
气球电光蓝凤凰
 

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 is included in subfamily Geophaginae. 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. There is also the fact that, 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, and males do not show this. Males reach a maximum length of seven centimeters, and females are usually slightly smaller. 

The natural habitat of M. ramirezi occurs in the warm, acidic water courses in the llanos savannahs of Venezuela and Colombia. The water at sites where M. ramirezi has been found is generally slow-flowing, contains few dissolved minerals, and ranges in color from clear to darkly stained with tannins. The species is typically found where cover in the form of aquatic or submersed vegetation is available. The ram cichlid is a popular cichlid for the tropical freshwater, community aquarium although it is not necessarily the easiest cichlid to maintain in many situations. This is because the species is often kept with other fish that are more assertive, aggressive or overly active. The species is innately shy and is best kept with passive dither fish, such as neon or cardinal tetras. The species will readily exhibit breeding behaviours in water of pH 5.5-6.5, though softer water encourages more regular spawning. It is easier to maintain the species in larger aquaria as the species is intolerant of common aquarium pollutants such as nitrate. The aquarium should be decorated to mimic the natural environment and is best decorated with several densely planted regions of aquatic plants, separated by open water. The species is prone to filial cannibalism of its brood if distressed. As the water must be free of pollutants, aquarium filtration is important, though water movement should not be extreme. Removing and replacing small amounts of water assists with minimizing the quantities of these pollutants and should be conducted regularly.

七彩凤凰鱼也叫马鞍翅鱼,是丽鱼科中难得的小型鱼。体长5厘米以下,成鱼后有着十分美丽的色彩。此鱼还有一个变种金马鞍翅鱼。
  七彩鱼虽然也是个十足的地盘主义者,但无奈过于细小,难以对其它鱼造成威胁,因此十分适于混养。七彩凤凰鱼对饲养环境有一定要求,饲养 七彩凤凰鱼箱最好铺底砂、种水草。水质应清澈陈旧,光线不应太强,水温控制在26—30℃为宜。在这种环境下饲养的七彩凤凰鱼不易生病,生长迅速,成年后会向人们充分展示它那五彩缤纷的色彩。
  七彩凤凰鱼一般在6月龄进入性成熟期。成年的七彩凤凰雄鱼体型稍大于雌鱼,色彩鲜明,背鳍前端会长出一两根长长的鳍条,颜色近于黑色。进入发情期的雄鱼非常漂亮,它会尽最大努力把自己打扮得更加美丽去吸引雌鱼。这时的雌鱼也变得漂亮起来,认真地挑选配偶,此时在肚以上呈现一大块玫瑰色红晕。
  七彩凤凰鱼的繁殖以集体繁殖为宜,即在一较大的铺砂的箱中同时放入几对亲鱼,并在箱中种几株水草,取几个小花盆洗净后按不同位置躺置于箱底,花盆的数量应等于亲鱼的对数,不需要特殊管理,按正常饲养即可,任凭它们进行自由“恋爱”。很快,它们会各自寻到满意的配偶,并双双共同挑选一个花盆作为产卵场所并立即占领它,严禁其它鱼类靠近。七彩凤凰鱼的产卵过程和孵化方法与神仙鱼相同,唯一的区别是附着鱼卵的花应置于孵化箱底。


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