Thicklip Pupfish
Cyprinodon labiosus Humphries & Miller, 1981
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
The thicklip pupfish (Cyprinodon labiosus), known in Spanish as Cachorrito cangrejero, is a species of fish in the family Cyprinodontidae. The thicklip pupfish is endemic to Laguna Chichancanab in Quintana Roo, Mexico. In almost all places, different Cyprinodon species do not overlap in their range, but there are two notable exceptions and one of these is Lake Chichancanab, which is inhabited by C. labiosus, C. beltrani, C. esconditus, C. maya, C. simus, C. suavium and C. verecundus (the other place where several Cyprinodon species live together are lakes in San Salvador Island, the Bahamas). Among the endemic Cyprinodon species in Lake Chichancanab, only C. beltrani and C. labiosus still occur in some numbers in their habitat, while the remaining are virtually—if not fully—extinct in the wild (at least some of these still survive in captivity). They usually live in a tropical climate with temperatures ranging from 22 to 26 °C (72 to 79 °F). The maximum total length of this fish is 7 centimetres (2.8 in).
Wikipedia contributors, Thicklip pupfish; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T06:01:51.375875+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Cyprinodon labiosus Humphries & Miller, 1981
- Name authority
- Humphries & Miller, 1981
- Common name
- Thicklip Pupfish
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Cyprinodontiformes
- Family
- Cyprinodontidae
- Genus
- Cyprinodon
- Extinction status
- Not supplied by this source
Source habitat flags: Marine: no · Freshwater: yes · Terrestrial: no. These do not form a complete habitat description.
Classification family tree
Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- gigaclassActinopterygii
- superclassActinopteri
- classTeleostei
- orderCyprinodontiformes
- familyCyprinodontidae Wagner, 1828
- subfamilyCyprinodontinae Wagner, 1828
- genusCyprinodon Lacepède, 1803
- speciesCyprinodon labiosus Humphries & Miller, 1981
Close classified relatives
These entries share the source’s genus, Cyprinodon. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Cyprinodon alvarezi Miller, 1976 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Cyprinodon arcuatus Minckley & Miller, 2002 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Yucatan pupfishCyprinodon artifrons Hubbs, 1936 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| San Ignacio pupfishCyprinodon bobmilleri Lozano-Vilano & Contreras-Balderas, 1999 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Cyprinodon bondi Myers, 1935 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Cyprinodon bovinus Baird & Girard, 1853 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Cyprinodon brontotheroides Martin & Wainwright, 2013 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Cyprinodon elegans Baird & Girard, 1853 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Hidden PupfishCyprinodon esconditus Strecker, 2002 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Conchos PupfishCyprinodon eximius Girard, 1859 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Carbonera PupfishCyprinodon fontinalis Smith & Miller, 1980 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
| Cyprinodon higuey Rodriguez & Smith, 1990 | CyprinodontidaeChordata | Accepted speciesExtinction status not supplied |
Source literature & publication evidence
References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.
- Humphries, J. M., & Miller, R. R. (1981). A remarkable species flock of pupfishes, genus Cyprinodon, from Yucatán, Mexico. Copeia 1981, 1. https://doi.org/10.2307/1444040 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references
Origins, evidence & remaining research
Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.
Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.
Dataset citation & attribution
This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11
Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.
Stable key: col:33HMV. Classification follows source parent identifiers. English common names may vary by region.