IN SINGLE FILE
Golden Trevallies (Gnathanodon speciosus, intermediate phase), Coiba National Park, Panama.
They are golden colored with black stripes that start to fade away once they start to age. These four intermediate ones are not anymore bright yellow like juveniles, but their stripes have not faded away yet like adults.
When they are younger they often live between the tentacles of jellyfish, but when they are older, the live in schools as "pilot fish" for whale sharks, manta rays, large sharks...
Olympus OMD EM5 MkII, Panasonic 8mm Fisheye Lens, Nauticam Housing, Dual Inon Z-240 Strobes. Settings 1/125, f/8, ISO200