Marine Gilltail

The marine gilltail split from its ancestor the hook-beak river gilltail. It has returned to the sea where it filled the same niche its distant ancestor the crystal gilltail filled millions of years ago. It lives wherever the marine crystal grows and only its it. Its coloring mimics the marine crystal's red and green colors and the golden sand. It specifically eats the green photosythetic parts of the marine crystal and leaves the red fungi-like parts to re-grow. Their beaks are parrot-like so they can break off the hard chitinous crystals. During mating season males will fight over females by clashing beaks. The winner gets to mate with the female and then the eggs are laid into the golden sand.