A spine taken from the back of a White River Monster, a magical fish native to the White River in Arkansas, was used as a wand core by the American wandmaker Thiago Quintana. Quintana's harvesting of White River Monster spines initially raised concerns of over-fishing, but because he was the only one who knew how to lure the creatures, the ecological impact was not severe. White River Monster spines were no longer used as a wand core after Quintana's death, as he took the secret of luring the creature to his grave.
This White River Monster spine produced spells of force and elegance.
- Pottermore (Mentioned only)