Fat spring minnow

{{Short description|Species of fish}}

{{Speciesbox

| status = EN

| status_system = IUCN3.1

|status_ref={{cite iucn |author=Freyhof, J. |date=2014 |title=Pseudophoxinus crassus |volume=2014 |page=e.T60751A19007954 |doi=10.2305/IUCN.UK.2014-1.RLTS.T60751A19007954.en |access-date=16 November 2021}}

| taxon = Pseudophoxinus crassus

| display_parents = 3

| authority = (Ladiges, 1960)

| synonyms =

• Acanthorutilus crassus Ladiges, 1960

| synonyms_ref =

}}

The fat spring minnow (Pseudophoxinus crassus) is a species of freshwater ray-finned fish belonging to the family Leuciscidae, which includes the daces, Eurasian minnows and related species.{{Cof genus|genus=Pseudophoxinus|access-date=3 May 2025}} It is endemic to Turkey{{FishBase | genus = Pseudophoxinus | species = crassus | month = October | year = 2015 }} and inhabits freshwater rivers and intermittent streams. It is threatened by habitat loss.