This is tamable in some way and good source of food

Don't tame near water or it will drown

It’s a harmless fish and if you die to it then ark is not the game for you

These are the most violent creature in game. You need at least 3 people, 10 Gigas max level, a platform quetzal, with cannon balls about 250 minimum. A couple rex's hopefully max level health. Now build a simple trap out of metal spikes. Now find one of these beasts, very carefully line up your Gigas, and rex's. These are sacrifices for the Coelacanth to eat while you shoot carefully from your queztal, have the other people shoot as well. Finally feed the beast kibble.

-MangoDragon3

Unfortunately, you cannot craft fish baskets on mobile. I am sorry fellow mobile players. I reached level 100 and its is still not there.

So how to really tame it get a fish basket then find one you like then put the fishing basket in front of it then when it gets close press capture fish don't know why people keep lieing about how to tame it.

Tamable using fish baskets from aberration.

Find it in the river, kill it and there you go, drag its dead corps around and enjoy :) ( until it decomposes )

You can feed them, I repeat you can feed them! All you have to do is kill a few fish and put the fish meat in their inventory the same goes with the Piranha and Sabertooth Salmon. Also side note you can drag any food item (dead animal) and drop it in front of the Piranha’s and they’ll eat it.

Hope this helps!