Lake Bermin
BW
The Bermin Lake is a small crater in the Sud-Ouest region of Cameroon, between the Banyang - Mbo Conservation Reserve and National Park in the Bakossi Bakossi Mountains. He reached a diameter of 700 meters and a depth of 16 meters. The circular lake has no inflow and drained into the basin of the Cross River. The lake water is slightly alkaline and soft, with a conductivity of 80 mS. The seabed consists of a mixture of mud and silt, and is covered with numerous rocks, and leaves, branches and trunks of trees, as the shore of the lake is covered with dense jungle.
Fauna
Despite its small area, home to the lake as a result of sympatric speciation nine small stature and very difficult to distinguish endemic cichlids of the genus Coptodon (C. bakossiorum, C. bemini, C. bythobates, C. flava, C. gutturosa, C. imbriferna, C. snyderae, C. and C. spongotroktis thysi ). Most of these Tilapinen feed on detritus. Food specialists are C. imbriferna, a phytoplankton filter feeder and C. spongotroktis who specializes in feeding on sponges.
All cichlids of the lake are considered threatened with extinction ( critically endangered ) on the Red List of Threatened Species IUCN
In addition to the nine cichlids, there are only two other species of fish in the lake, a small carp fish from the relationship of Barbus aboinensis and Killifish from the Fundulopanchax mirabilis - group ( = subgenus Paraphyosemion ).