Otopharynx sp. 'auromarginatus margrette' Likoma Island
Genus:
Otopharynx
Biotope:
Occurs at the boundary of sand and rocks around
Likoma Island.
Geographic distribution:
Known only from the Likoma area in Lake Malawi.
Typical adult size:
Up to about 18 cm total length.
Sexual dimorphism:
Females and juveniles show a large blotch in the middle
of the flank and one or two smaller blotches on
the caudal peduncle.
Diet:
Feeds from sandy substrates by scooping up the muddy
surface layer; females and non-territorial males
may also feed on plankton in schools. The gut is
approximately four times the total length,
indicating a herbivorous feeding strategy.
Breeding:
Territorial males defend caves at lake-floor level,
typically beneath large overhanging rocks.
Spawning takes place inside the cave.
Aggression:
Males are territorial during breeding.
Special notes:
Undescribed species included in the
auromarginatus group. Some specimens were
incorporated in the type series of
Otopharynx auromarginatus. In the aquarium trade
it has been known as “Haplochromis Margaretae”,
“Haplochromis Margrette” and “Haplochromis Big
Blotch”. The Likoma population is the only one
documented and has been collected for the
aquarium trade.
Photo gallery