Species Article: Lake Victoria & Area

Neochromis rufocaudalis

by Greg Steeves

Related Content: Puzzle

The lakes of the African rift contain many varied species of aquatic life. Each of these large bodies of water contains its own unique varieties of fish that have come to take advantage of particular feeding niches. Food supply is generally the key factor in determining diversity. Algae supply is abundant in these lakes and many different species of fish have evolved to exploit this food source. Not surprisingly, the true aufwuchs grazers of the rift valley region have similar characteristics. Labeotropheus species of Lake Malawi, the Tropheus of Lake Tanganyika, and the Neochromis of Lake Victoria are three such species that, although they have evolved separately from one another, share common traits. Specialized tooth structure, elongated intestinal tracts, and a robust torpedo shaped body structure all aid these fish in processing the food on which they feed.

The fish I want to deal with here is endemic to Lake Victoria. Neochromis rufocaudalis, formerly known as Neochromis nigricans is not one of the more threatened species of Lake Victoria. I am not certain as to how geographical variants of this species may differ, but the variety of rufocaudalis that we keep was exported from the Saa Nane Island region of Lake Victoria.

This is not a large fish, growing only to about five inches maximum. Females and sub dominant males are similarly patterned. A broken series of blotches along the lateral line is backgrounded by an earth brown coloration. Dominant male coloration is strikingly beautiful. Males will sport a dark blue to almost back body coloration with bright red tail and anal fins. Several jet-black vertical bars are evenly spaced along the body. The dorsal fin is a vibrant metallic blue outlined with a bright red stripe. The horizontal barring between the eyes of this beauty, commonly seen in Lake Malawi species, really sets this fish off nicely.

Dominant males will stake out a territory, usually in a rock cave or crevice. When not chasing other fish, the male Neochromis rufocaudalis spends his time showing off with a series of "shimmies" to prospective females. It is a beautiful sight to see a large group of these fish grazing an algae covered rock. Reflections cast on their body glitter and gleam in the light.

To keep these undemanding fish in top condition, it is helpful to feed a spirulina based flake in small amounts frequently. This would be a great fish for those hobbyists who feel their animals are always hungry and have the need to sprinkle food to them every time they walk by the tank. Rufocaudalis are not shy fish and will learn to recognize their feeder on sight. They will remain mostly in the open under captive settings, but caves and secluded places, as well as artificial plants placed throughout the tank will aid in overcoming any timidness they may possess. Under a grolux lighting scheme, dominate males sparkle and stand out very nicely.

Breeding is typical of the great African lakes mouthbrooders, and while this species is peaceful towards other species, its members can be brutal to one another. Domestic violence is often the cause of death for many a female. It is very necessary to keep this fish with 'dithers', or in a community setting. We have one breeding group housed with a very active pair of Nimbochromis venustus, and this is working out very well.

When keeping a group of any type of Victorian cichlid, the bigger the tank, the better. I would suggest an aquarium of no less than 55 gallons for a group of twelve Neochromis rufocaudalis. It is not advisable to mix any Lake Victoria rock cichlid species together in a tank due to the possibility of interbreeding; however, one may find it necessary from time to time. The rufocaudalis might be an exception to this rule. The very rounded, tropheus-like head structure of this species make it easily identifiable from most other cichlids from this region. I have had our group housed with an equal number of Haplochromis sp. 83 "purple yellow" and there were no damaging inter-species conflicts. Males and females of each species are readily able to identify their own and any prelude to breeding activity is kept within same species. If you must mix species of Victorian cichlids, try to use fish as different as possible. This includes differing body shape and especially coloration. We as hobbyists must endeavor to keep our fish races as pure as possible because, as Brad Harrison, in his article, Lake Victoria and Satellite Lakes stated, "there is no going back to the well".

Neochromis rufocaudalis is a peaceful community fish and mixes well with any of the more peaceful Malawi mbuna. Like most Victorian rock cichlids, it is not a common fish in the hobby and is an undemanding jewel for our tanks.

 



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