Lone changer: Fish camouflage better without friends nearby

While gobies aren't the only fish with camouflage abilities, new research shows that their colour change is influenced by their social context: they transform faster and better when alone. This is likely an adaptive, stress response to perceived threat from predators - with possible application to other camouflaging species.

source https://www.sciencedaily.com/releases/2021/10/211014102032.htm