Even though the differences appear superficially striking, they do not involve any novel body plans (i.e., no new proteins, new tissues, or new organs).
Cichlid and stickleback fish are two of the most iconic examples of adaption that biologists present as evidence for the plausibility of evolutionary processes.
Cichlid variation do not primarily originate from random mutations but from engineered systems.
Cells are equipped with sensors that recognize touch and respond accordingly. They can even reach out to other cells with nanoscopic tunnels and share parts.
If cichlid evolution is a central paradigm in evolutionary biology, then Darwinism’s sphere of explanatory inference is too small to matter.