Over 30 different forms of this species occur in Lake Malawi. These should not be mixed in the aquarium as they will hybridise freely. C. elongatus differs morphologically from other mbuna, being relatively slender and elongate. One of the most aggressive and territorial mbuna. It should not be kept with peace loving species such as Peacocks or Utaka but it can be combined with other mbuna provided they do not resemble it in patterning. The tank should be overcrowded to reduce aggression and territory formation. It is incredibly aggressive towards others of the same species and the presence of heterospecifics helps to dissipate this. However a very large tank is required in order to keep more than one male and even then it is likely that the sub-dominant male(s) will be killed. At least 4-6 females should be kept per male for their own safety! This species is not recommended for the beginner due to it’s violent nature, but does make a good aquarium subject for the advanced aquarist.
| Scientific name | Common Name | Size | Temperament |
| Pseudotropheus elongatus | Elongate Mbuna | 135mm (M) 100mm (F) | Aggressive |
| Water Temperature | Water pH | Tank size | Diet |
| 24-28oC | 7.6 - 8.8 | 250 litres | omnivore |