Neoshark was the name given to several species of aquatic predators in the Post Diaspora era.
Sphinx neoshark Edit
A predatory sea creature native to Sphinx in the Manticore System was known as the "neoshark". (HHA2.4: THWH)
Thalassian neoshark Edit
The Thalassian neoshark was a dangerous sea creature with small yet lethal teeth. Cordelia Ransom reminded Thomas Theisman of it. (HH7)