Arius
Arius is a genus of catfishes of the family Ariidae. The genus Arius is distributed in brackish and fresh waters of Eastern Africa and east to Southeast Asia.

Robert Mintern · Public Domain · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- AriidaePBDB
- Diet
- carnivorePBDB, for Siluriformes
- Life habit
- nektobenthicPBDB, for Siluriformes
- Motility
- actively mobilePBDB, for Siluriformes
- Environment
- marine,brackish,freshwaterPBDB, for Ariidae
Time the record covers
At least 65 million years on record.
The record covers at least 66 Mya to 129 ka. No occurrence read is dated outside 72.2 Mya to 11.7 ka.
73 occurrences of Arius on record, most of them in the Eocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
73 occurrences- Late Cretaceous1%
- Paleocene11%
- Eocene53%
- Oligocene4%
- Miocene24%
- Pliocene2%
- Pleistocene4%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
30 formations
- Ameki Formation · Bende-Ameki Group10
- Barton Clay Formation6
- Urumaco Formation6
- Scotland Formation4
- Harudi Formation3
- Pirabas Formation2
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The named rock units Arius has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 further formations hold fewer occurrences each and are not listed. 14 occurrences have no formation on record, which is common for older literature.
Arius and its relatives
EoceneWhere Arius and its relatives were recorded in the Eocene.
Found in the same rock
1,885 taxa- Cylindracanthus rectus13 sites
- Myliobatis12 sites
- Carcharhinus10 sites
- Dasyatis10 sites
- Pristis lathami10 sites
- Lepisosteus9 sites
- Carcharias hopei8 sites
- Hemipristis serra8 sites
- Rhinoptera8 sites
- Teleostei8 sites
- Carcharhinus gibbesii6 sites
- Centroberyx fragilis6 sites
- Ginglymostoma serra6 sites
- Otolithes6 sites
- Propristis schweinfurthi6 sites
- Sparus6 sites
- Sphyraena6 sites
- Trichiurus6 sites
- Abdounia enniskilleni5 sites
- Aetomylaeus dixoni5 sites
- Aetomylaeus striatus5 sites
- Anoxypristis5 sites
- Aves5 sites
- Chlorophthalmus postangulatus5 sites
The Paleobiology Database records 52 sites for Arius, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
35 references- Giant-toothed White Sharks and Wide-toothed Mako (Lamnidae) from the Venezuela Neogene: Their Role in the Caribbean, Shallow-water Fish Assemblage7
- Faunal Horizons of the Barton Beds in Hampshire7
- Eocene stratigraphy of southern Nigeria6
- Eocene fishes from Nigeria6
- Contribution à l'étude des Poissons fossiles des Antiles5
- Fish otoliths from the Paleocene of Denmark4
- Lower Tertiary vertebrates from western India3
- Neue Untersuchungen an tertiaren Fisch-otolithen. Part II3
- The otoliths from the middle Paleocene of Luzanivka (Cherkasy district, Ukraine)2
- Localidades fossiliferas da Formacao Pirabas (Mioceno Inferior)2
- Bathymetric distribution of Miocene to Pleistocene Caribbean teleostean fishes from the coast of Panama and Costa Rica2
- Integrated Paleoecology and Marine Vertebrate Fauna of the Stone City Formation (Middle Eocene), Brazos River Section, Texas2
Each of the 73 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 23 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content2
Picture of Arius
- Source
- Wikipedia/Commons
- Credit
- Robert Mintern
- Licence
- Public Domain
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Credit
- AUM Fish Collection
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Arius maculatus · AUM:AUM:44875
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itAriidae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Cuvier and Valenciennes 1840)