When taming each feed summons 6 lvl 1 megalodon

They are only agro on you, not the wild heli

So mount back up on your water tame and swim away before killing them to avoid hitting the heli and ruining taming effectiveness

It’s not aggressive. You need Little Ratfish Treats in the last slot of your hotbar. But don’t feel like this is too easy. When you feed it Little Ratfish Treats ammonite clouds will appear so make sure to bring and strong water tame (preferably plesiosaur or megalodon) and kill anything that tries to hurt you. Repeat. Hope this helps.

Just a quick fun fact about this tame. Be prepared to either fight for your life or run for your life when you feed the heli the rat fish treats it loves. I had 6 lv 1 megs spawn in and kill both my icthy and my new heli... I had my icthy on passive and my heli was only lv 2. Not to mention any other creature in the area that wants a nibble out of you and your new tame. Just a friendly heads up