Haplochromis orthostoma Regan, 1922
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
Haplochromis orthostoma is a species of cichlid fish that is endemic to the Lake Kyoga system in Uganda, where only known from Lake Bisina (a medium-sized lake to the east of Lake Kyoga itself) and Lake Nawampassa (a small lake southeast of Lake Kyoga itself and only separated by a thin swamp). Its continued survival in Lake Bisina is questionable as it has not been recorded in recent surveys, but it still survives in Lake Nawampassa. This piscivorous species is peaceful among similar-sized or larger fish, but will rapidly swallow smaller fish with its very large mouth. The largest officially measured specimen was 9.1 cm (3.6 in) in standard length, although it has been known to reach about 18 cm (7.1 in) in total length.
Wikipedia contributors, Haplochromis orthostoma; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:43:56.931180+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Haplochromis orthostoma Regan, 1922
- Name authority
- Regan, 1922
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Cichliformes
- Family
- Cichlidae
- Genus
- Haplochromis
- 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
- orderCichliformes
- familyCichlidae Bonaparte, 1835
- subfamilyPseudocrenilabrinae Fowler, 1934
- genusHaplochromis Hilgendorf, 1888
- speciesHaplochromis orthostoma Regan, 1922
Close classified relatives
These entries share the source’s genus, Haplochromis. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Haplochromis acidens Greenwood, 1967 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis aelocephalus Greenwood, 1959 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis akika Lippitsch, 2003 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis albertianus Regan, 1929 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis ampullarostratus Schraml, 2004 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis antleter Mietes & Witte, 2010 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis barbarae Greenwood, 1967 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis bareli van Oijen, 1991 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis bartoni Greenwood, 1962 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis boops Greenwood, 1967 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis brownae Greenwood, 1962 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Haplochromis cassius Greenwood & Barel, 1978 | CichlidaeChordata | 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 |
|---|---|
| Pyxichromis orthostoma (Regan, 1922) (Regan, 1922) | 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.
- Regan, C. T. (1922). The cichlid fishes of Lake Victoria. Proceedings of the Zoological Society of London, (pt 1) (no. 9): 157–191, Pls. 1–4. 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:3JLXD. Classification follows source parent identifiers. English common names may vary by region.