Symphysodon aequifasciatus

Symphysodon aequifasciatus
Blue discus (above) and brown discus (below)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cichliformes
Family: Cichlidae
Genus: Symphysodon
Species:
S. aequifasciatus
Binomial name
Symphysodon aequifasciatus
Pellegrin, 1904
Synonyms
  • Symphysodon discus var. aequifasciata Pellegrin, 1904
  • Symphysodon aequifasciatus aequifasciatus Pellegrin, 1904
  • Symphysodon aequifasciata haraldi L. P. Schultz, 1960
  • Symphysodon haraldi L. P. Schultz, 1960
  • Symphysodon aequifasciata axelrodi L. P. Schultz, 1960
  • Symphysodon axelrodi L. P. Schultz, 1960

Symphysodon aequifasciatus, the blue discus or brown discus, is a species of cichlid native to rivers of the eastern and central Amazon Basin downriver from the Purus Arch.[2] This discus is found in black-, clear- and whitewater,[2][3] but its preference for lentic habitats such as floodplains and flooded forests means that the whitewater it inhabits contain little suspended material (unlike main sections of whitewater rivers).[4] It is largely restricted to water with a high temperature of 25–32 °C (77–90 °F) and a pH of 5.2–7.7.[5]

It typically reaches a length of up to 15.2 centimetres (6 in) SL,[3] but captives have been claimed to reach 23 cm (9 in).[6] It is commonly kept in aquariums.[7]

  1. ^ Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) (2022). "Symphysodon aequifasciatus". IUCN Red List of Threatened Species (in Portuguese). 2022: e.T49830657A141105884. doi:10.2305/IUCN.UK.2022-1.RLTS.T49830657A141105884.pt. Retrieved 5 July 2024.
  2. ^ a b Ready, J.S.; Ferreira, E.J.G.; Kullander, S.O. (2006). "Discus fishes: mitochondrial DNA evidence for a phylogeographic barrier in the Amazonian genus Symphysodon (Teleostei: Cichlidae)". Fish Biology. 69: 200–211. doi:10.1111/j.1095-8649.2006.01232.x.
  3. ^ a b Crampton (2008). "Ecology and life history of an Amazon floodplain cichlid: the discus fish Symphysodon (Perciformes: Cichlidae)" (PDF). Neotrop. Ichthyol. 6 (4): 599–612. doi:10.1590/S1679-62252008000400008.
  4. ^ Cite error: The named reference Amado2011 was invoked but never defined (see the help page).
  5. ^ Bleher, H.; Stölting, K.N.; Salzburger, W.; Meyer, A. (2007). "Revision of the genus Symphysodon Heckel, 1840 (Teleostei: Perciformes: Cichlidae) based on molecular and morphological characters". Aqua. 12: 133–174.
  6. ^ "Discus". Seriously Fish. Retrieved 25 January 2017.
  7. ^ Froese, Rainer; Pauly, Daniel (eds.). "Symphysodon aequifasciatus". FishBase. January 2017 version.