The following new species of the genus Aulonocara were described: Aulonocara ethelwynnae n.sp., Aulonocara hansbaenschi n.sp, Aulonocara hueseri n.sp., Aulonocara korneliae n.sp., Aulonocara saulosi n.sp., and Aulonocara steveni n.sp.
The examination of these six new species reveals that Aulonocara and Trematocranus can no longer be defined on the basis of the degree of swelling of the mucus cavities of the infraorbital bones, 0 to 2 or 2 to 4 scale rows on the cheek and the absence or presence of spot series on the body sides, because these characteristics are found in variable combinations.
From this study Trematocranus auditor, T. brevirostris =
T. brevirostre, T. jacobfreibergi, T. microstoma and
Cyrtocara macrocleithrum are assigned to the genus Aulonocara;
A. macrochir TREWAVAS, 1935 is a synonym of A. rostrata =
rostratum TREWAVAS, 1935; T. peterdaviesi BURGESS AXELROD [sic],
1973 should be included in the complex of Lethrinops REGAN, 1922.