All the species of the unicorn clade, well done
That is a Sea Rapier Unicorn
https://m.youtube.com/watch?v=sTK84oQoOHU
also you forgot the Sea Chainsaw Unicorn
Exactly how they use their saw after the prey has been located has been debated, and some scholarship on the subject has been based on speculations rather than real observations.[5][79] In 2012 it was shown that there are three primary techniques, informally called “saw in water”, “saw on substrate” and “pin”.[79] If a prey item such as a fish is located in the open water, the sawfish uses the first method, making a rapid swipe at the prey with its saw to incapacitate it. It is then brought to the seabed and eaten.[5][60][79] The “saw on substrate” is similar, but used on prey at the seabed.[5][79] The saw is highly streamlined and when swiped it causes very little water movement.[82] The final method involves pinning the prey against the seabed with the underside of the saw, in a manner similar to that seen in guitarfish.[5][79] The “pin” is also used to manipulate the position of the prey, allowing fish to be swallowed head-first and thus without engaging any possible fin spines.