Go to the ocean and swim around in the shallows until I ichy comes to you. Feed him or her RAW fish or regular meat (I think you can feed them meat) then craft a saddle but if u are on mobile and have a tame ichy quest don’t because it will give you one. I have a light blue green one named bloat who is my best friend. I have a little cove with the dodo like fish and the occasional piranha. I take him fishing because he dose a lot of damage to the smaller fish and he doesn’t get attacked by ANYTHING so I follow around the megs and then take what they kill. I love bloat he even saved me from one of those big turtle thing (forgot what they are called) bye get urself a ichy it will change ur life!