Allotoca goslinei
{{Short description|Species of fish}}
{{Speciesbox
| name = Banded allotoca
| image = Goodeid fishes (10.3897-zookeys.885.38152) Figure 1.jpg
| image_caption = Allotoca goselinei, as seen in Figure A, among other Goodeidae species.
| status = EW
| status_system = IUCN3.1
| taxon = Allotoca goslinei
| authority = M. L. Smith & R. R. Miller, 1987
| synonyms =
| synonyms_ref =
}}
Allotoca goslinei, commonly known as the banded allotoca or tiro rayado in Spanish, is a species of fish in the family Goodeidae.{{Cite journal |last1=Helmus |first1=Matthew R. |last2=Allen |first2=Lauren B. |last3=Dominguez-Dominguez |first3=Omar |last4=Díaz Pardo |first4=Edmundo |last5=Gesundheit |first5=Pablo |last6=Lyons |first6=John |last7=Silva |first7=Norman Mercado |date=2009-01-01 |title=Threatened fishes of the world: Allotoca goslinei Smith and Miller, 1987 (Goodeidae) |url=https://doi.org/10.1007/s10641-008-9406-y |journal=Environmental Biology of Fishes |language=en |volume=84 |issue=2 |pages=197–198 |doi=10.1007/s10641-008-9406-y |s2cid=3051598 |issn=1573-5133|url-access=subscription }} First described in 1987,{{Cite journal |last1=Smith |first1=Michael Leonard |last2=Miller |first2=Robert Rush |date=1987 |title=Allotoca goslinei, A New Species of Goodeid Fish from Jalisco, Mexico |url=https://www.jstor.org/stable/1445653 |journal=Copeia |volume=1987 |issue=3 |pages=610–616 |doi=10.2307/1445653 |jstor=1445653 |issn=0045-8511|url-access=subscription }} it was once endemic only to the Ameca River basin in the Mexican state of Jalisco.{{Cite journal |last1=López-López |first1=Eugenia |last2=Paulo-Maya |first2=Joel |date=June 2001 |title=Changes in the Fish Assemblages in the Upper Río Ameca, Mexico |url=http://www.tandfonline.com/doi/abs/10.1080/02705060.2001.9663803 |journal=Journal of Freshwater Ecology |language=en |volume=16 |issue=2 |pages=179–187 |doi=10.1080/02705060.2001.9663803 |s2cid=86593417 |issn=0270-5060|url-access=subscription }} It is now known to be extinct in the wild.{{Cite journal |last1=Lyons |first1=John |last2=Piller |first2=Kyle R. |last3=Artigas-Azas |first3=Juan Miguel |last4=Dominguez-Dominguez |first4=Omar |last5=Gesundheit |first5=Pablo |last6=Köck |first6=Michael |last7=Medina-Nava |first7=Martina |last8=Mercado-Silva |first8=Norman |last9=García |first9=Arely Ramírez |last10=Findley |first10=Kearstin M. |date=2019-11-04 |title=Distribution and current conservation status of the Mexican Goodeidae (Actinopterygii, Cyprinodontiformes) |journal=ZooKeys |issue=885 |pages=115–158 |doi=10.3897/zookeys.885.38152 |issn=1313-2970 |pmc=6848252 |pmid=31736620 |doi-access=free }}
Its specific name honors American ichthyologist William A. Gosline for his research on cyprinodontoid fish.{{Cite web |date=2019-04-26 |title=Order CYPRINODONTIFORMES: Families PANTANODONTIDAE, CYPRINODONTIDAE, PROFUNDULIDAE, GOODEIDAE, FUNDULIDAE and FLUVIPHYLACIDAE |url=https://etyfish.org/cyprinodontiformes3/ |access-date=2023-03-10 |website=The ETYFish Project |language=en-US}}
Morphology
On average, males are 31.9mm long and females are 33.6mm long. It has two rows of conical teeth. A. goslinei differs from others in Allotoca by the number of vertebrae, supraorbital pores, and number of vertical stripes on its side.
Habitat
Diet
Their diet likely consists of small arthropods.
Sexual dimorphism
This species is sexually dimorphic in coloring and fin length. Notably males have a longer dorsal fin than females.
Conservation
With only one known population located in a single tributary of the Ameca River, A. goslinei is an evolutionarily significant unit. Though this species was first discovered in 1987, pollution led to population decline by the 1990s and by the 2000s, a more rapid decline took place after the introduction of Xiphophorus helleri.