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Epalzeorhynchos frenatus


Epalzeorhynchos frenatus
Rainbow Shark
彩虹鲨
The rainbow shark, Epalzeorhynchos frenatum, is a popular freshwater community-tank aquarium fish of the Cyprinidae family. It is also variously known as the ruby shark, red-fin shark, red-finned shark, rainbow sharkminnow, green fringelip labeo, whitefin shark and whitetail sharkminnow. Rainbow sharks have elongated, dark-black and greenish bodies. They also can be light orange body wise with dark red fins.They also come in an albino variety which has a white body and bright orange fins. The snout is pointed. The abdominal area is flat. The fins possess red to orange-red coloration. The linear area from the gill cover, the eye, and the mouth has a characteristic brief stripe. Compared to females, male rainbow sharks have thinner bodies with black lines along the tailfins. Males also have brighter coloration. They can grow up to 15 cm long. Rainbow sharks are species native to the basins of Mekong, Chao Phraya, Xe Bangfai and Maeklong in Thailand in Southeast Asia. They are also found in Indonesia. They live in water with sandy bottoms. Rainbow sharks are tank-bottom and aquarium-surface cleaners. Being bottom-level and mid-level dwellers, they consume leftover fishfood. They are known to be territorial, and aggressive to their own species. If kept with their own kind or relatives, threat displays and fighting is likely to occur. This fighting behavior involves head-and-tail butting, and also biting.. A large rainbow shark will continuously chase a smaller rainbow shark until the smaller one dies, especially in confined environments like aquaria. This makes breeding difficult. Provision of hiding places and hollowed decors such as plants or artificial cave-like and tunnel-like aquatic ornaments minimize this typical behavior. Due to this behavioral characteristic among its own kind. Keeping them with relatives such as red-tailed sharks, bala sharks and black sharks should be avoided

与红尾黑鲨类似。不同的是红尾黑鲨只有尾巴是红色,彩虹鲨各鳍均为红色。体色有黑、白之分。
本鱼鱼体修长,呈灰色,有带黑边的鳞片。一条黑色条纹从吻部延伸至眼睛中央。尾柄末端有一块黑斑,叉形尾鳍呈红色,口下位,有两对触须。雄鱼较修长,臀鳍有黑条纹。体长可达15公分 本鱼栖息在溪流与河川的中层水域与深底部具坚硬底质的水域。署草食性,以藻类、浮游植物为食,具侵略性。
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