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Description
This is a green swordtail. Found in the rivers of Central America. The green swordtail is named for the elongated lower lobe of the male's caudal fin. The wild form of the green swordtail is olive green in color, but comes in different colors in captivity. The green swordtail is a common lab fish, and has been used as a model organism in studies.

Description
This is a green swordtail. Found in the rivers of Central America. The green swordtail is named for the elongated lower lobe of the male's caudal fin. The wild form of the green swordtail is olive green in color, but comes in different colors in captivity. The green swordtail is a common lab fish, and has been used as a model organism in studies.