Gulf opal eye
- kingdom: Animalia
- phylum: Chordata
- class: Actinopterygii
- order: Perciformes
- family: Kyphosidae
- genus: Girella
- species: Girella simplicidens
Mulegé- San Felipe
Baja California- Loreto
Baja California Sur- Guaymas
- La Libertad
- Puerto Peñasco
Sonora
Mexico