Chauliodus
A viperfish is any species of the genus Chauliodus, marine fish inhabiting the twilight or mesopelagic zone. Viperfish are at most around 30 cm (12 in), and are characterized by silvery scales, long needle-like teeth and photophores along the ventral side of their body.

NOAA Ocean Exploration, Voyage to the Ridge 2022 · 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
- StomiidaePBDB
- Diet
- carnivorePBDB, for Stomiiformes
- Life habit
- nektonicPBDB, for Stomiiformes
- Motility
- actively mobilePBDB, for Stomiiformes
Time the record covers
At least 10 million years on record.
The record covers at least 11.63 Mya to 1.4 Mya. No occurrence read is dated outside 15.98 Mya to 129 ka.
17 occurrences of Chauliodus on record, most of them in the Miocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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
17 occurrences- Miocene76%
- Pliocene6%
- Pleistocene18%
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
5 formations
- Modelo Formation7
- Monterey Formation2
- Valmonte Formation1
- Kurasi Formation1
- "unnamed sandstone" Formation1
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The named rock units Chauliodus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.
Chauliodus and its relatives
MioceneWhere Chauliodus and its relatives were recorded in the Miocene.
Found in the same rock
230 taxa- Lampanyctus5 sites
- Scomber5 sites
- Maurolicus muelleri4 sites
- Bathylagus angelensis3 sites
- Benthosema glaciale3 sites
- Ceratoscopelus maderensis3 sites
- Cyclothone3 sites
- Diaphus3 sites
- Diaphus holti3 sites
- Gadiculus argenteus3 sites
- Hygophum benoiti3 sites
- Lampanyctus crocodilus3 sites
- Lobianchia dofleini3 sites
- Notoscopelus elongatus3 sites
- Xyne grex3 sites
- Acropoma2 sites
- Araeosteus rothi2 sites
- Argyropelecus bullockii2 sites
- Bellotia apoda2 sites
- Benthodesmus2 sites
- Ceratoscopelus2 sites
- Decapterus agilis2 sites
- Diaphus taaningi2 sites
- Eclipes2 sites
The Paleobiology Database records 17 sites for Chauliodus, 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
10 references- Late Tertiary radiation of viperfishes (Chauliodontidae) based on a comparison of Recent and Miocene species7
- Miocene Fishes of Southern California2
- The fossil viperfish Chauliodus testa sp. nov. (Stomiiformes: Stomiidae) from the Neogene of western Sakhalin, Russia1
- Paleobathymetric interpretation of the fish otoliths from the lower - middle quaternary deposits of Kephallonia and Zakynthos islands (Ionian Sea, Western Greece)1
- Fossil fishes from the Serravallian (Middle Miocene) of Torricella Peligna, Italy1
- Pleistocene fish otoliths from the Mediterranean Basin: a synthesis1
- Deep fish assemblage from the Middle Miocene Morozaki Group, southern part of Chita Penninsula, Aichi Prefecture, central Japan1
- Données récentes sur Les téléostéens du Miocène et du Pliocéne d'Italie1
- Marine studies of San Pedro Bay, California1
- The fossil fishes of the Miocene of Southern California1
Each of the 17 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. 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 content3
Picture of Chauliodus
- Source
- Wikipedia/Commons
- Credit
- NOAA Ocean Exploration, Voyage to the Ridge 2022
- Licence
- Public Domain
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Chauliodus sloani · tcwc:ichthyology:16971.05
3D model
- Source
- Sketchfab
- Credit
- Pomona Pictures
- Licence
- CC Attribution-NonCommercial-ShareAlike
- Commercial use
- the licence does not allow it
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
- Source
- Wikipedia, “Viperfish”
- 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 itStomiidae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Schneider 1801