Hi Magnus, nice Video as usual! But The Fish in your Thumbnail is descripted as Metriaclima pulpican(Pseudotropheus kingsizei) and Metriaclima koningsi is ex Metriaclima spec Membe Deep.
Can’t pick a favorite mate that’s the problem with Malawi 🇲🇼:) more serious question would Callinos (cobalt blue) and Labidochromis Caeruleus do well together in a 300 liter 1.2 meter (4ft) tank?