Fig. 4

Colour differences between a homogeneous greenish‐brown (GB) and b homogeneous pink (P) shrimp and the algae Sargassum and Galaxaura, for groups of individuals reared for five days in each of these substrates. Colour differences were defined as the Euclidian distance between standardised colour coordinates in a trichromatic reflectance colour space of shrimp and algae. Solid black lines represent mean group values. **p < 0.01; ***p < 0.001; ns: not-significant