Iodotropheus stuartgranti is a species of cichlid endemic to Lake Malawi. It can also be found in the aquarium trade. This species can reach a length of 10 centimetres (3.9 in) TL. The specific name honours Stuart M. Grant (1937-2007), an exporter of cichlids from lake Malawi for the aquarium trade. This species feeds maonly on aufwuchs. The males are territorial and the female will lay anywhere within a male's territory.
The blue mbuna is a species of cichlid found in Lake Malawi where it inhabits areas with rocky substrates. This species can reach a length of 30 centimetres (12 in) SL. This species is important to local commercial fisheries as well as being found in the aquarium trade. Some of its mottled forms are sometimes known as marmalade cat.
Labidochromis lividus is a species of cichlid endemic to Lake Malawi where it is only known to occur over rocky substrates along the western coast of Likoma Island. This species can reach a length of 7.1 centimetres (2.8 in) SL. It can also be found in the aquarium trade.
The littletooth sandeater is a species of cichlid endemic to Lake Malawi where it is known from sandy areas around Cape Maclear and in Senga Bay. This species grows to a length of 14.5 centimetres (5.7 in) TL. It can also be found in the aquarium trade.
Maylandia callainos is a species of cichlid endemic to Lake Malawi where they only occurred naturally in Nkhata Bay though it has now been introduced to other locations. This species can reach a length of 8 centimetres (3.1 in) SL. It can also be found in the aquarium trade. Maylandia callainos was formally named Pseudotropheus callainos and is often referred as such in the scientific literature.
William's mbuna, also known as ice blue zebra mbuna or ice blue zebra or the Pseudotropheus ice blue among the aquarium enthusiasts, is a species of cichlid fish endemic to Lake Malawi where it is only found at Makokola in the southeastern arm of the lake. This species can reach a length of 13.4 centimetres (5.3 in) TL. It can also be found in the aquarium trade. The specific name honours the German ornamental fish importer Alfons Greshake.
Melanochromis chipokae is a species of cichlid in the Cichlidae endemic to Lake Malawi where it is only known to occur at Chipoka. It lives in habitats characterized by patches of sand amongst rock. This piscivorous species can reach a length of 12 centimetres (4.7 in) SL. It can also be found in the aquarium trade, which is the main threat to this species and which has caused a 90% decline in the population. This has led to the IUCN assessing this species as Critically Endangered.
Melanochromis melanopterus is a species of cichlid endemic to Lake Malawi where it is found over rocky substrates. This species can reach a length of 11.4 centimetres (4.5 in) SL. It can also be found in the aquarium trade.
The purple mbuna is a species of cichlid endemic to Lake Malawi. This species can reach a length of 7.4 centimetres (2.9 in) SL. It can also be found in the aquarium trade.
Otopharynx lithobates is a species of cichlid endemic to Lake Malawi. This species can reach a length of 16 centimetres (6.3 in) TL. This species can also be found in the aquarium trade. As O. walteri this species was known as Aristochromis deep in the aquarium trade.
Protomelas annectens is a species of cichlid endemic to Lake Malawi where it is found in sandy shallows with large species of cichlid. This species can reach a length of 20 centimetres (7.9 in) TL. This species can also be found in the aquarium trade.
Protomelas virgatus is a species of cichlid endemic to Lake Malawi. This species can reach a length of 14 centimetres (5.5 in) SL. It can also be found in the aquarium trade.
Pseudotropheus minutus is a species of cichlid endemic to Lake Malawi. It prefers areas with rocky substrates where it can feed on algae, particularly in areas other species cannot access. It can reach a length of 6.6 centimetres (2.6 in) SL. It can also be found in the aquarium trade.
Trematocranus labifer is a species of cichlid endemic to Lake Malawi where it prefers the shallows off of sandy beaches. This species can reach a length of 22.4 centimetres (8.8 in) TL. This species can also be found in the aquarium trade.
Trematocranus is a small genus of haplochromine cichlids endemic to Lake Malawi.
Trematocranus placodon is a species of cichlid fish endemic to Lake Malawi, Lake Malombe and the upper reaches of the Shire River in Africa. It is mainly a shallow-water species that prefers to occupy areas with patches of Vallisneria, but it can occur as deep as 31 m (102 ft). It can reach a total length of up to 25 cm (9.8 in).
Tropheops microstoma is a species of cichlid fish endemic to Lake Malawi where it prefers sheltered bays with calm waters. This species can reach a length of 9.8 centimetres (3.9 in) SL. It can also be found in the aquarium trade.
Tropheops tropheops is a species of cichlid endemic to Lake Malawi preferring areas with rocky substrates. This species can reach a length of 14 centimetres (5.5 in) TL. It can also be found in the aquarium trade.
Tyrannochromis macrostoma, or big-mouth hap, is a species of cichlid endemic to Lake Malawi where it prefers rocky shallows. This species can reach a length of 30 centimetres (12 in) TL. It can also be found in the aquarium trade.
Malapterurus microstoma, the smallmouth electric catfish, is a species of electric catfish native to the Congo River basin of Central African Republic, the Democratic Republic of the Congo and the Republic of the Congo. This species grows to a length of 55.5 centimetres (21.9 in) SL. This fish can be found in the aquarium trade. It is illegal to possess any species of electric catfish for personal or commercial use in Florida.
