Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once. Such duplicates are listed under synonyms. EOL also provides support for common names which may vary across regions as well as languages.

Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Integrated Taxonomic Information System (ITIS)
view in classification
BioImages resource Class
Conabio Class
EOL Group on Flickr
Encyclopedia of Marine Life of Britain and Ireland Resource Class
FALO Classification
view in classification
IABIN resource Class Import
  • Osteichthyes
Moorea Biocode
  • Osteichthyes
Paleobiology Database
view in classification
Unranked clade
Phenoscape Catfish Fin Shapes Class
Smithsonian type specimen data Class
Wikimedia Commons
Wikipedia Class
Wikipedia Class
iSpot southern Africa Class


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

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