LAKE TANGANYIKA CICHLIDS.
Order Perciformes
Family Cichlidae
Subfamily ( Pseudocrenilabrinae )
Genus Grammatotria.
— Grammatotria lemairii [Boulenger, 1899]. Synonym: Parectodus hemelrycki. Lake Tanganyika. Up to 25 cm, females are smaller. Body and snout are elongated. Eyes are relatively large, placed high and oval. A genus similar to the genus Xenotilapia, particularly in its main coloration and the presence of a third lateral line. There are also similarities in habitat requirements and behavior. Pelvic fins are not elongated at the ends and have the same length in the first and last rays. There is a black spot at the base of the tail, which is typical for schooling fish. Individuals with black spots on the flanks are sometimes found.
The aquarium should have a large open area. The bottom is covered with fine or medium river sand. Several large stones can be used to mark territorial boundaries. Fish are indifferent to plants. It is better not to keep these fish in pairs; it is preferable to buy several individuals and create a small group. They easily get along with other Tanganyika cichlids. The fish takes food from the surface layers of the sandy bottom using a directed inferior mouth. The sand is chewed, and most of it is expelled through the gills, while all nutrients are retained and eaten.
An extremely excitable cichlid. If peace in the aquarium is disturbed, it must be done with extreme caution, as the fish may panic and either jump out of the water, or injure itself against aquarium decoration elements or its glass. Sometimes, in moments of extreme danger, it can hide in the sand. T 25-27°C; pH 7.8-8.5; dH 10-20°.
Genus Greenwoodochromis.
— Greenwoodochromis bellcrossi [Poll, 1976]. Synonym: Hemibates, Limnochromis bellcrossi. Lake Tanganyika. 18 cm. The main body coloration is silvery-blue, and there is a light dotted pattern in the soft-rayed area of the dorsal fin. There is a pair of horizontal pearl stripes on the body. Pelvic fins are pointed and elongated. Anal and dorsal fins have pointed endings. There are five dark vertical stripes on the caudal fin.
Large flat stones are placed along the back and side walls in the form of pyramids, creating many caves connected by passages. These shelters are necessary for the fish because they like to spend part of their time in caves. Thanks to the large number of stones, the fish do not dig pits even during spawning, but lay eggs directly on the stones. In these same stones, after spawning, the female with eggs in her mouth can easily hide from the male’s continued courtship. They are piscivorous predators that do not disdain crustacean delicacies either.
— Greenwoodochromis christyi [Trewavas, 1953]. Synonym: Limnochromis christyi. Lake Tanganyika. 17 cm. Body slightly elongated, moderately high. Mouth superior, deep and placed almost at a 45° angle to the horizontal. Pelvic fins are spotted and slightly elongated.
The aquarium should have a large open water zone and a bottom covered with fine or medium river sand, not too light in tone. Numerous shelters in the form of large caves are also necessary. In the aquarium, this species demonstrates extremely weak intraspecific aggression. Fish are indifferent to plants. This species is carnivorous and feeds on small fish or mollusks. T 25-27°C; pH 7.8-8.5; dH 10-20°.
Identification: Genus Greenwoodochromis.
Gnathochromis permaxillaris, Gnathochromis pfefferi.
Eretmodus cyanostictus, Goby Cichlid. 
