Shallow rocky waters around the Mbenji Islands and Nkhomo Reef,
with wave-washed boulders and algae-covered substrates.
Most common at depths of about 3–5 m,
reported up to at least 20 m.
Geographic distribution:
Endemic to Lake Malawi,
with confirmed records from the Mbenji Islands and Nkhomo Reef.
Typical adult size:
Up to about 9 cm total length.
Sexual dimorphism:
Subtle.
Males show a more distinct mauve iridescence on the body and cheeks,
while females appear duller,
with both sexes sharing a similar overall color pattern.
Recommended aquarium size:
A minimum tank size of 160 liters is recommended for a group of 6–8 specimens.
Aquarium setup:
Rocky aquascape with abundant caves, crevices, and hiding places,
combined with sandy substrate and some open swimming space.
Stable alkaline, hard water conditions are recommended.
Diet:
Insectivorous,
feeding primarily on invertebrates found among rocks and algae
in shallow habitats.
Breeding:
Maternal mouthbrooder.
Females incubate the eggs and developing young in the mouth
for about 21–28 days.
Aggression:
Relatively peaceful,
with males showing minimal territorial behavior compared with many other mbuna.
Special notes:
The specific epithet “ianthinus” is derived from Greek
and refers to a violet-blue coloration,
reflecting the characteristic mauve iridescence described for this species.
It is a localized Labidochromis associated with shallow rocky habitats
around Mbenji Island and Nkhomo Reef.
Photo gallery