Care
Pseudotropheus cyaneorhabdos is known from the rocky habitat at Likoma Island on the eastern side of the lake. It belongs to the Mbuna group of cichlids. The aquarium should be at least 4ft long and aquascaped to emulate a rocky reef effect with some open expanses of sand. Décor such as ocean rock can be used to build sturdy structures which stretch from the base of the tank to near the surface of the water. These structures should be built with the purpose of creating many crevices for the fish to explore but constructed in such a way so as to keep the rocks stable if the fish start to dig around and underneath them. Although a substrate of coral sand or Aragonite is often recommended to help to keep the water hard and alkaline, Mbuna feel safer and show better colours over a darker substrate. The Aragonite or coral sand can always be placed into a mesh bag and kept inside the external filter for buffering purposes. Most rock-dwelling species are extremely aggressive and need to be kept under conditions of 'controlled-overcrowding' to prevent territorial disputes ending fatally - additional filtration may also be required to cope with a heavy bioload. P. cyaneorhabdos is a fairly belligerent species, and it is best to keep one male in a harem situation with several females (keeping just one female with a male will result in continual harassment and possibly death). This species can be kept successfully alongside other outgoing Mbuna, although it is best to avoid fish with a similar colour pattern. This fish was, for years, known as Melanochromis cyaneorhabdos or M. sp. 'maingano' (Maingano Island is a small island close to Likoma where this species is found) , but it was deemed to be more closely related to Pseudotropheus. It has also been confused with P. johannii, and although males of both species are very similar-looking, the female P. johannii are bright orange, as opposed to blue in P. cyaneorhabdos. May also be seen on sale as the Maingano Cichlid.
Feeding
Omnivorous. A good quality flake food can be offered along with appropriately sized granular foods specifically developed for Mbuna. An occasional treat of Mysis shrimp, vitamin-enriched brineshrimp, and mosquito larvae can be given, and vegetable matter such as cucumber, blanched spinach and romaine lettuce can be fed on a regular basis.
Breeding
When ready to spawn, the colouration of the male will intensify and his aggression level will heighten. He will choose and clean a spawning site, then display to the female fish until one accepts him. They will circle each other in a head to tail manner a number of times, until the female deposits her eggs. These are deposited just one or two at a time and after doing so, she immediately turns around and picks them up. At the same time, the male will rotate so that he is almost on his side, at the same time shaking and extending his anal fin, releasing his milt. The female sees the egg spots on the male"™s anal fin and attempts to pick up those "œeggs" whilst she is picking up the real ones that she deposited, and at the same time taking in milt. This is the method of fertilisation, and this ritual may go on for some hours. The eggs may be incubated for up to 25 days until they hatch and the resultant fry held for a further few days afterwards.
