Muddy deep-water habitats down to depths of about 215 meters, at the limit of the
oxygen-bearing layer. Likely migrates to somewhat shallower water during the night.
Geographic distribution:
Endemic to Lake Tanganyika with a lake-wide distribution in suitable habitats.
Typical adult size:
Average length reported about 12.5 cm for females and 11 cm for males.
Sexual dimorphism:
Males have a large black spot on the dorsal fin surrounded by a white halo; the
marking is much smaller in females. Females are reported to be larger than males.
Diet:
Feeds on small snails as well as insect larvae and crustaceans.
Breeding:
A ripe female was reported with 120 eggs, about 2 mm long.
Aggression:
Very timid and non-aggressive.
Special notes:
This species is among the very few fishes capable of permanently inhabiting depths
at the extreme limit of the oxygen-bearing layer, where dissolved oxygen levels are
very low.
Photo gallery