Cynolebias nigripinnis Regan 1912 Popular name Blackfinned Pearlfish. Origin Parana River in Argentina. Size 1.5 inch.Appearance Male has a velvety black body and fins covered with numerous light green or blue spots. Female is ochre-colored with irregular markings.Behavior A delicate, fairly peaceful species.Feeding Live and fresh foods.Water conditions Moderately soft, slightly acid water. Sexing As above. Breeding As for genus (see Genus Cynolebais). Difficult to breed and rear young.Recomended feeding system Aquaze Tropical.

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