The spottail chub (Algansea tincella) is a species of freshwater fish in the family Leuciscidae, , the shiners, daces and minnows. This fish is endemic to the LermaâÂÂChapala basin and upper Santa Maria (Tampoán) system in west-central Mexico. Populations of the Ameca River basin were formerly included in this species, but are now recognized as A. amecae.
There are some minor local variations in the appearance of A. tincella, but they all have a dark spot at the base of the tail. The species generally is about in standard length.