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!.
Feeding: Predatory fish, larger live food, also fish. The fish can get used to strips of raw meat.
Size: Up to 30 cm
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)
All images, information, text, and other information/items in this site © Aquaworld website as described in the Berne convention.