Hands down one of my favorite tame! Super underrated A must tame! I used it for my first underwater cave, it handled eels well but I wouldn’t recommend picking fights with them. Spin is amazing ! I tamed a plesiosaur with it all I did was turn in circles and shoot and it was very easy! GET THIS DINO!!!
Baryonyx are quick like Allosaurus and do just as much damage (but don't get a pack bonus). They don't use oxygen for swimming and can sprint in the water. Right click in the water does an AoE stun that lasts about 10 sec. Their 'C' is a... Taunt? They also jump and you can fire a weapon from their back.
It's like a small Allo combined with a Kapro, in my opinion. Useful on both land & in the water. Use its secondary attack while swimming to stun, attack, and harvest. Does NOT stun Cnidarias, though, so do not expect to overpower them.