They make great gaurd dogs because of their mate boost and shock torpor damage witch helps protect your raft from leed and sarcos. They also good as body guards because of their speed and the sheer number of them that you can have at once. They can also overwhelm this like mosas and megalodons so you can knock them out in minutes.
Don't ever tame one of those, unless you're trying to get the achievment. Wild ones are very annoying and that makes you think tamed ones will be useful, right? NO, THEY'RE NOT! They do have an aoe attack that stuns, but they're not rideable and the AI won't ever use this attack. Instead, they will keep bitting with a ridiculous damage, like 6 or 7 points.
One of the most feared aquatic wild creatures is totally useless when tamed.
Masstame 150's til you got 25 of them, use them together with a swarm of 50 mantas backed up by mateboosted basils, mosas and tusos.
Absolutely insane, ofc have them covered by some tek and heavies set on players only.
Have them all following a passive tame on low distance (could be an angler), and have them set on attack-my-target, and aggro range high.
Have a trapped tame as scout on aggressive and aggro range high, when it aggro towards any dinos or players, it will send the whole force to kill and stun the target, when target is out of range or dead, they will come back to base.