Karyotypes of all 11 cichlids from Barombi Mbo crater lake arranged from Giemsa-stained chromosomes. All 11 species from the lake possess an identical karyotype with 2n = 44 (NF = 50). (a) Sarotherodon steinbachi, (b) S. lohbergeri, (c) S. linnellii, (d) S. caroli, (e) Myaka myaka, (f) Stomatepia mariae, (g) St. pindu, (h) St. mongo, (i) Pungu maclareni, (j) Konia eisentrauti, and (k) K. dikume; sm, submetacentric and st/a, subtelocentric-acrocentric chromosomes. The enlarged subtelocentric chromosome pair, which is also characteristic of the Nile tilapia (Oreochromis niloticus) karyotype, is marked with an asterisk.