Endangered
Fountain darter
Etheostoma fonticola
Fountain darter is a ray-finned fish in the family Percidae (order Perciformes) — Etheostoma fonticola, recorded as Endangered.
The ray-finned fish
It is generally smaller than 3 cm (1.2 in) long and feeds on small invertebrates.
Range and habitat
The fountain darter is known from only two locations, primarily the headwaters of the spring-fed San Marcos River, having been observed as far as 1.25 miles downstream, as well as the upper reaches of the Comal River in central Texas. Its geographic isolation is reflective of its incredibly specific habitation preferences, that demand conditions that can only be found in these two Texas river headwaters. The population in the Comal River was extirpated due to spring failure in the 1950s.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Breeding
It breeds all year round, and the eggs are deposited on dead leaves, stems, rocks, algae, or other objects.
In crisis
Fountain darter is Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Fountain darter, Wikidata item Q3756372. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.



