Freshwater Fish For Aquariums - Curiosity Corner
FRESHWATER FISH CURIOSITY CORNER Some species, often possessing unique anatomical features or biomechanisms, exist only as a single family in the world of the aquarist - and sometimes also in the wild. For these reasons we have grouped them together on this double page. Notopterus chitala (Notopteridae) The Indian knifefish or clown knifefish lives in Asia in slightly alkaline waters. It can swim both forwards and backwards, and tends to be nocturnal. Several species have proved marketable; one of them, Notopterus notopterus, which has only recently been successfully bred in captivity, is used as a food source in certain parts of the world. Size: 20-30 cm. Xenomystus nigri (Notopteridae) The African knifefish is distinguishable from N. chitala by the absence of a dorsal fin, but resembles it in being a twilight species. Occasionally it emits a groan-like sound from the pneumatic duct, which links the swim bladder to the digestive tube. Size: 10-20 cm Gnathonemus petersii (Mormyridae) Peters’s elephantnose uses its “trunk” to sift the substrate for food, preferably in darkness, as it is rather timid. The elephant-nose can emit weak - and quite harmless - electrical discharges. Size: 15-20 cm. Pantodon buchholzi (Pantodontidae) The butterfly fish is a surfacedweller, gulping down its prey (it has a preference for live food) with its yawning mouth. Sometimes aggressive, it can leap from the water. Its common name derives from its butterfly-like appearance as it swims with pectoral fins outspread. Size: 12 cm. 122 Eigenmannia virescens (Rhamphichthyidae) The green knifefish originates from calm waters in South America, and therefore prefers soft, acid conditions. Another more or less twilight species, it appreciates live prey. Appears not to breed in captivity. Size: 20-30 cm.
You are probably asking your self is it possible to buy tropical fish via Internet.Yes it is!!!We will send you fish on any place of Earth, just check our Buying Fish Online section.
Tags: freshwater fish, tropical fish