The brain structure and the neural network features of the diurnal cuttlefish .

Cuttlefish are known for their rapid changes of appearance enabling camouflage and con-specific communication for mating or agonistic display. However, interpretation of their sophisticated behaviors and responsible brain areas is based on the better-studied squid brain atlas. Here we present the first detailed description of the neuroanatomical features of a tropical and diurnal cuttlefish, , coupled with observations on ontogenetic changes in its visual and learning centers using a suite of MRI-based techniques and histology.

Dynamic Courtship Signals and Mate Preferences in .

Communication in cuttlefish includes rapid changes in skin coloration and texture, body posture and movements, and potentially polarized signals. The dynamic displays are fundamental for mate choice and agonistic behavior. We analyzed the reproductive behavior of the mourning cuttlefish in the laboratory.