Rocky habitat, associated with clear-water, sediment-free conditions.
Geographic distribution:
Reported along the eastern shore from Makonde (Tanzania) to Chiloleo
(Mozambique).
Typical adult size:
Males reach approximately 13 cm in total length, while females reach about 10 cm.
Sexual dimorphism:
Males are larger and show breeding colours that range from yellowish-blue
to entirely blue depending on locality, while females remain entirely
yellow.
Recommended aquarium size:
An aquarium volume of 300 L is recommended, with a minimum tank
length of 120 cm.
Aquarium setup:
Provide ample rockwork and shelters so weaker individuals can retreat.
Diet:
Herbivorous, feeding by grazing and scraping algae from the aufwuchs.
Aggression:
Aggressive within the species, but generally tolerant towards other
species.
Special notes:
Recognised as a distinct taxon after observations at Magunga (Tanzania)
indicated two similar species occurring together: males of this form were
found to be entirely blue, while the corresponding females were silvery
rather than yellow. Across its range, male colour may be entirely blue or
blue with a yellow patch on the head, breast, and shoulders, with the
yellow sometimes restricted to the lower part of the head. This species is
characterised by males with a black band in the anal fin and by yellow
females, and it has been confused with Tropheops macrophthalmus,
whose males lack a black band in the anal fin and whose females are brown.
Photo gallery