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Hyphessobrycon columbianus
The Colombian tetra or blue-red Colombian tetra, ''Hyphessobrycon columbianus'', is a species of Tropical freshwater fish of the characin family. The Colombian tetra is native to the Acandi River near Acandí) in northwestern Colombia. The Colombian tetra's habitat tends to be slow-flowing creeks and tributaries.
Only recently introduced to the aquarium trade, it is one of the more expensive tetras.
They will generally get on with most other aquarium fish and will shoal with other types of tetra. However, they have been observed to harass smaller fish on occasions.
==Description==
Growing to about total length, the Colombian tetra is silver-grey in colour. It has a turquoise blue tinge of increasing intensity from the lateral line upwards, which becomes a prominent stripe across the anterior dorsal ridge. The fins are predominantly scarlet red but the colour will fade as the fish rests. The anal fin is usually edged with black, and both dorsal and caudal fins have whitish tips. It resembles ''Hyphessobrycon ecuadorensis'' from western Ecuador, and prior to the description of ''H. columbianus'' in 2002, the latter had generally been confused with the former.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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