Fish Tooth found in Lake?

[Caaaleb]

Hello,

I found this tooth or rock in the bank of a lake where I was collecting and sifting in a concentrated gravel spot. 1 oyster, 1 coral piece, and 2 snails are the only fossils I found. After searching a little more, I found this rock which I'm assuming is a tooth. The gravel where I found this possible tooth is also in the Eagle Ford of the Cretaceous of Texas.

I'm thinking either shark or fish tooth. It's slightly curved and there isn't any enamel or serrations (that I can see), so I might be wrong. Can anyone identify the species of animal the tooth may have belonged to? Or if it's just a rock?

Any help is appreciated

Thanks

[Al Dente]

Looks like the tip of a shark tooth.