Jack
- kingdom: Animalia
- phylum: Chordata
- class: Actinopterygii
- order: Perciformes
- family: Nematistiidae
- genus: Nematistius
- species: Nematistius pectoralis
Puntarenas
Puntarenas
Costa RicaCabo San Lucas
La Paz
Baja California SurAcapulco
GuerreroMazatlán
SinaloaGuaymas
Sonora
Mexico