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Xenomystus nigri, Günther, 1868

Origin: Upper Nile river, Zaire, Gabun, Niger and Liberia.

Etymology: Nigri means dark, black

Synonyms: Notopterus nigri, Gunther, 1868.

First import: Gemany, 1909, By K. Siggelkow.

Description: See picture, the fish can easily be recognized since it's the only species without a dorsal fin.

Care: Difficult, larger animals are solitary and aggressiv towards other Xenomystus nigri. The fish require soft and acidic water, and a dark environment(floating plants, lots of driftwood, dark gravel and reduced light). Some free swimming space should be available, and the tank size should be 1 meter or larger. Since the fish are predatory, do not keep them together with smaller fish!.

Temperature:22-28 degrees

Feeding: Predatory fish, larger live food, also fish. The fish can get used to strips of raw meat.

Size: Up to 30 cm

pH: 5.5-6.5

Breeding: Unk

Sexual dimorphism:Unk

Prices: unk

Additional: Most fish tat are bought as juveniles do not survive the first month!

Picture references:Picture 1: E. Naus

References:Baensch, H. A., Riehl, R.(1982): Aquarien Atlas I. Mergus Verlag, Melle, Germany.(click on the link to buy this book)