Chromis
Chromis is a genus of fish in the family Pomacentridae. While the term damselfish describes a group of marine fish including more than one genus, Chromis is the largest genus of damselfishes. Certain species within the genus are common in the aquarium trade.
Albert Kok at Dutch Wikipedia · 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
- PomacentridaePBDB
- Motility
- actively mobilePBDB, for Osteichthyes
Time the record covers
At least 4.5 million years on record.
The record covers at least 5.333 Mya to 774 ka. No occurrence read is dated outside 7.246 Mya to 129 ka.
5 occurrences of Chromis on record, most of them in the Pleistocene. 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
5 occurrences- Miocene20%
- Pleistocene80%
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
2 formations
Loading coastlines…
The named rock units Chromis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Chromis and its relatives
PleistoceneWhere Chromis and its relatives were recorded in the Pleistocene.
Found in the same rock
166 taxa- Cepola4 sites
- Deltentosteus4 sites
- Dentex4 sites
- Lesueurigobius4 sites
- Muraena conger4 sites
- Spicara smaris4 sites
- Aphia3 sites
- Ceratoscopelus maderensis3 sites
- Gobius3 sites
- Grammonus ater3 sites
- Hygophum3 sites
- Maurolicus muelleri3 sites
- Ophidion3 sites
- Pagellus3 sites
- Benthosema glaciale2 sites
- Carapus acus2 sites
- Clupeidae2 sites
- Diaphus2 sites
- Diaphus holti2 sites
- Diaphus rafinesquii2 sites
- Diaphus taaningi2 sites
- Electrona risso2 sites
- Engraulis encrasicolus2 sites
- Gadiculus2 sites
The Paleobiology Database records 5 sites for Chromis, 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
3 references- The Zanclean marine fish fauna and palaeoenvironmental reconstruction of a coastal marine setting in the eastern Mediterranean2
- Pleistocene marine fish invasions and paleoenvironmental reconstructions in the eastern Mediterranean2
- Les Poissons fossiles d'Oran1
Each of the 5 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 content2
Picture of Chromis
- Source
- Wikipedia/Commons
- Credit
- Albert Kok at Dutch Wikipedia
- 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
- Chromis chromis · FMNH:Fishes:84880
The description on this site
- Source
- Wikipedia, “Chromis”
- 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 itPomacentridae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Lacépède 1802