Description
Species name: | Polypterus Ornatipinnis 飾翅多鰭魚 |
Common Names: | Ornate bichir |
Family: | Polypteridae 多鳍鱼科 |
Order: | Polypteriformes |
Class: | Actinopterygii 輻鰭魚綱 |
Max. size: | 60 cm / 25 inches |
Environment: | Freshwater |
Origin: | Congo River and Lake Tanganyika and Lake Rukwa. Africa |
Temperament: | Peaceful |
Company: | Other peaceful species that are to large to be considered food i.e. at least half the size if the bichirs. |
Water parameters: | pH 6-8.0 Temperature 26 - 28°C / 77 - 83° F |
Aquarium setup:
Ornate bichir in best kept in larger aquariums as they grow very fast and can reach 60 cm / 25 inches in leght. Decorated the aquarium so that a lot of higing places are created among roots and rocks. Avoid using plants as they most likely will be destroyed. They are a nocturnal fish species but are sometimes active during the day. Use a fine grained substrate.
Feeding:
All kinds if frozen foods. Some specimens can be trained to accept pellets.
Breeding:
Can be breed in aquarium however breeding is very rare. Males have a large pocket like anal fin. Polypterus ornatipinnis scatter their eggs and leave their young to fend for them self.
多鳍鱼科(学名:Polypteridae)是软骨硬鳞亚纲 (Chondrostei)多鳍鱼目(Polypteriformes)目前仅存的一科,现存二属,又称恐龙鱼,是比较古老的辐鳍鱼类,全身有类似骨板的硬鳞,胸鳍有小的肉质叶,有鳍基骨,并不直接和肩胛骨连接,多鳍鱼有厚实的硬鳞,表面光滑有黏膜包裹,背部依据品种不同而有6至20个棘状背鳍, 这些棘状背鳍中的每一条都有锋利的刺状鳍骨。他们的下颌结构比起真骨附类的鱼 ,更相似于四足类的结构。 多鳍鱼有一定原始特征。这些的特征是有的肉质基叶的胸鳍,这和腔棘鱼相似,而他们也有呼吸孔 (spiracles)的。 所有多鳍鱼目成员都在非洲的淡水河、湖区栖息,主要为沼泽、浅泛滥区和出海的河口。
他们也有基础的肺部,可以从空气中吸取氧气,当在水中的氧气不足时,多鳍鱼会快速地游到表面吸气,此鱼在幼鱼期会像两栖类的有外鳃。在这些种类之中的最大长度为30cm至100cm以上。
本魚體延長呈圓柱狀,上頜與下頜等長,側線鱗片58至65個,體背兩側灰褐色,並具有大理石花紋,腹面白色至淡黃色,魚鰭有白點,背鰭硬棘9至11枚;臀鰭軟條14至15枚,體長可達60公分。
本魚棲息在湖泊、河流氾濫的區域,屬肉食性,以魚類、甲殼類及水生昆蟲等為食。能呼吸空氣而且如此能容忍溶氧量低的集中,仔魚具有外鰓。可做為觀賞魚。