Use the master ball on it as it will catch it straight away but personally, I would just be patient as there are better Pokemon to use a Master Ball on.
Train a wailmer for wailord, relicanth has to be found underwater no other way.
No, Relicanth does not evolve.
relicanth
you find relicanth by mosdeep city.
Relicanth doesn't evolve
No, Relicanth does not evolve.
Yes, it always has to be Wailord and Relicanth - Relicanth in the first slot and Wailord in the last in Ruby and Sapphire, and Wailord in the first slot and Relicanth in the last in Emerald.
You can find Relicanth underwater, but they are rare.
relicanth for sure.
nothing evolves into relicanth and relicanth does not evolve
you will find relicanth underground under sotopolis city (note relicanth is super rare it will take for ever to find
Relicanth dont evlove period.