Kryptolebias marmoratus (Poey, 1880)
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 mangrove rivulus or mangrove killifish, Kryptolebias marmoratus (syn. Rivulus marmoratus), is a species of killifish in the family Rivulidae. It lives in brackish and marine waters (less frequently in fresh water) along the coasts of Florida, through the Antilles, and along the eastern and northern Atlantic coasts of Mexico, Central America and South America (south to Brazil). It has a very wide tolerance of both salinity (0–68 ‰) and temperature (12–38 °C or 54–100 °F), can survive for about two months on land, and mostly breeds by self-fertilization. It is typically found in areas with red mangrove and sometimes lives in burrows of Cardisoma guanhumi crabs.
The mangrove rivulus is up to 7.5 cm (3.0 in) long, but most individuals are 1–3.8 cm (0.4–1.5 in).
Overall the mangrove rivulus is widespread and not threatened, but in the United States it is considered a Species of Concern by the National Marine Fisheries Service.
Wikipedia contributors, Mangrove rivulus; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:56:37.857877+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Kryptolebias marmoratus (Poey, 1880)
- Name authority
- (Poey, 1880)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Cyprinodontiformes
- Family
- Rivulidae
- Genus
- Kryptolebias
- 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
- familyRivulidae Myers, 1925
- genusKryptolebias Costa, 2004
- speciesKryptolebias marmoratus (Poey, 1880)
Close classified relatives
These entries share the source’s genus, Kryptolebias. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Kryptolebias brasiliensis (Valenciennes, 1821) | RivulidaeChordata | Accepted speciesExtinction status not supplied |
| Kryptolebias campelloi (Costa, 1990) | RivulidaeChordata | Accepted speciesExtinction status not supplied |
| Kryptolebias gracilis Costa, 2007 | RivulidaeChordata | Accepted speciesExtinction status not supplied |
| Kryptolebias hermaphroditus Costa, 2011 | RivulidaeChordata | Accepted speciesExtinction status not supplied |
| Kryptolebias ocellatus (Hensel, 1868) | RivulidaeChordata | Accepted speciesExtinction status not supplied |
| Kryptolebias caudomarginatus (Seegers, 1984) | RivulidaeChordata | Accepted speciesExtinction status not supplied |
| Kryptolebias sepia Vermeulen & Hrbek, 2005 | RivulidaeChordata | 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 |
|---|---|
| Rivulus garciai de la Cruz & Dubitsky, 1976 de la Cruz & Dubitsky, 1976 | synonym |
| Rivulus marmoratus Poey, 1880 Poey, 1880 | synonym |
| Rivulus marmoratus bonairensis Hoedeman, 1958 Hoedeman, 1958 | synonym |
| Rivulus heyei Nichols, 1914 Nichols, 1914 | synonym |
| Rivulus bonairensis Hoedeman, 1958 Hoedeman, 1958 | synonym |
| Rivulus garciae de la Cruz & Dubitsky, 1976 de la Cruz & Dubitsky, 1976 | 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=314719 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:3RF27. Classification follows source parent identifiers. English common names may vary by region.