Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Dajaus monticola
Lisa de rio, Mountain mullet
(Agonostomus m.) Size> The largest specimen recorded in the Galapagos was the first one ever collected, measuring 343 mm TL. On floreana, size rarely exceeds 100 mm TL.
(Agonostomus m.) Habitat: The only specimens that we have examined from the Galapagos were collected in freshwater streams on San Cristobal and Floreana.
Domain
Eukaryota
Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Order
Mugiliformes
Suborder
Mugiloidei
Family
Mugilidae
Genus
Dajaus
Species
monticola
Taxon category: Accepted
Syn.: Agonostoma microps, Agonostoma percoides Günther, 1861, Agonostoma squamipinne Mohr, 1927, Agonostomus hancocki Seale, 1932, Agonostomus macracanthus Regan, 1907, Agonostomus microps (Günther, 1861), Agonostomus monitcola (Bancroft, 1834) (misspelling), Agonostomus monticola (Bancroft, 1834) · unaccepted, Agonostomus salvini Regan, 1907, Dajaus elongatus Kner, 1863, Joturus daguae Eigenmann, 1918, Mugil irretitus Gosse, 1851, Mugil monticola Bancroft, 1834, Neomugil digueti Vaillant, 1894 (Horton et al., 2021)
Origin: Native
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: (Agonostomus m.) Eastern Pacific, from the Gulf of California to the Galapagos; recorded from many lakes and streams in Central America, often far from the sea. Pre-juveniles have been dipnetted in the open sea off the Central American coast.
- Grove, J.S. Lavenberg, R.J. (1997) The Fishes of the Galapagos Islands. Stanford University Press, Stanford California. 862 pp.
- McCosker, J.E. Rosenblatt, R.H. (2010) The fishes of the Galápagos Archipelago: an update. Proc. Calif. Acad. Sc., Ser. 4, vol. 61, Suppl. II, no. 11: 167-195.
- Horton, T. Horton, T., Kroh, A., Ahyong, S., Bailly, N., Boyko, C. B., Brandão, S. N., Gofas, S., Hooper, J. N. A., Hernandez, F., Holovachov, O., Mees, J., Molodtsova, T. N., Paulay, G., Decock, W., Dekeyzer, S., Poffyn, G., Vandepitte, L., Vanhoorne, B., Adlard, R., ... Zhao, Z. (2021) World Register of Marine Species. Available from https://www.marinespecies.org at VLIZ.
You are welcome to download and use the information found in this page, acknowledging its source.
This page should be cited as follows:
"Galapagos Species Database, Dajaus monticola", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=20170. Accessed 16 July 2025.