It is olfactory/pheromonal input that is responsible for the sensory drive and species diversity of Cichlids and the diversity of all species.
evolutionary theorists cannot, without question, make the assumption that we are primarily visual creatures. The basis for that assumption was a non-existent avian model
…we can only wonder about how much information is processed when odor receptors that number in the hundreds generate electrical signals associated with olfactory/pheromonal assessment of environmental factors associated with the colors we see.
…food odors and pheromones cause the electrical activation of genes in nerve cells of brain tissue. This links them directly to behavior via the required gene, cell, tissue, organ, organ system pathway (Kohl, submitted).