Mexican night sergeant
Abudefduf declivifrons (Gill, 1862)
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
Abudefduf declivifrons, commonly known as the Mexican nightsergeant, is a species of damselfish in the family Pomacentridae native to the eastern Pacific Ocean. It is known only from Mexico, where it ranges from the Gulf of California to Acapulco. It is typically found in surge-exposed rocky reefs at a depth of 1 to 5 m (3 to 16 ft). It is an oviparous species, with individuals forming distinct pairs during breeding and males guarding and aerating eggs. The species reaches 18 cm (7.1 in) in standard length.
Wikipedia contributors, Abudefduf declivifrons; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T10:10:28.999525+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Abudefduf declivifrons (Gill, 1862)
- Name authority
- (Gill, 1862)
- Common name
- Mexican night sergeant
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Family
- Pomacentridae
- Genus
- Abudefduf
- Extinction status
- Not supplied by this source
Source habitat flags: Marine: yes · Freshwater: no · 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
- familyPomacentridae Bonaparte, 1831
- genusAbudefduf Forsskål, 1775
- speciesAbudefduf declivifrons (Gill, 1862)
Close classified relatives
These entries share the source’s genus, Abudefduf. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Abudefduf abdominalis (Quoy & Gaimard, 1825) | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
| Abudefduf conformis Randall & Earle, 1999 | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
| Abudefduf lorenzi Hensley & Allen, 1977 | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
| pearly sergeantAbudefduf margariteus (Cuvier, 1830) | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
| Natal sergeantAbudefduf natalensis Hensley & Randall, 1983 | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
| scissortail sergeantAbudefduf sexfasciatus (Lacepède, 1801) | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
| night sergeantAbudefduf taurus (Müller & Troschel, 1848) | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
| Panamic sergeant majorAbudefduf troschelii (Gill, 1862) | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
| cow pilotAbudefduf saxatilis (Linnaeus, 1758) | PomacentridaeChordata | Accepted speciesExtinction status not supplied |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Euschistodus declivifrons Gill, 1862 Gill, 1862 | synonym |
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.
- https://www.marinespecies.org/aphia.php?p=taxdetails&id=273698 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:8MQW. Classification follows source parent identifiers. English common names may vary by region.