hers how i tamed 2

First tame an ichthy and get a saddle,next get a crossbow and at least 50 tranqs.Then u need to go to shallow water with ur dolphin that is near a high level bronto.then put the bronto to sleep and forcefeed it mejoberries and it is tamed!(ark is so weird last thing dinos will remeber is u shooting its head and forcefeeding it make it like u like wth)

Anyways thanks for reading!

The use for mine was spare prime meat,im sorry bronto lovers