''Gambusia longispinis'', the Cuatrociengas gambusia (also locally called the Guayacon de Cuatro Cienegas), is an endangered species of fish in the family Poeciliidae. It is endemic to Cuatro Ciénegas in Mexico.

References

longispinis Freshwater fish of Mexico Taxa named by Wendell L. Minckley Fish described in 1962 Taxonomy articles created by Polbot {{Cyprinodontiformes-stub