These little guys are so much easier to tame in mobile, but harder to find. You still need to kill a megipirahna, but you don’t need to grab its corpse to feed the otter. After harvesting its meat you can easily walk up to it and feed it until it’s tamed. It doesn’t run away in mobile, and I’m sure you can use any fish meat.
I found one in a really dangerouse area and let me say it was worth it I love otters sadly my little bouncy died to a raptor soon after tamed I forgot we were in a dangerous area. Poor little bouncy :( she bounced at my feet it was so cute :)
best to tame a ichthyornis and carry it with you when looking for one of these guys, put the ichthyornis on hunt and retrieve it will catch a fish and bring it back golden and will have a better taming affect to feed to otter, like this up its very important peeps must know :)))
2 tames make these super easy, a Parasaur and ichthyornis Strap a Parasaur to a raft in an otter spawn location and set it to "alert to creature" grab your friendly ichthyornis and have it carry back all the fish your new otter friend will ever need.