Coptodon zillii
(Gervais, 1848) · speciesAt a glance
Sources11 archives
Databases and archives Coptodon zillii's data was compiled from.
WikipediaWikimedia Foundation8 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility3 377 records↗
OBISOcean Biodiversity Information System1 191 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI200 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics202 specimens↗
Open Tree of LifeOpenTreephylogeny backbone↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
NCBIUS National Library of Medicinegenome & karyotype↗
WikidataWikimedia Foundationstructured facts↗
Catalogue of LifeCOLtaxonomy↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
The redbelly tilapia (Coptodon zillii, syn. Tilapia zillii), also known as the Zille's redbreast tilapia or St. Peter's fish (a name also used for other tilapia in Israel), is a species of fish in the cichlid family. This fish is found widely in fresh and brackish waters in the northern half of Africa and the Middle East. Elsewhere in Africa, Asia, Australia and North America, it has been introduced as a food fish or as a control of aquatic vegetation. Where introduced, it sometimes becomes invasive, threatening the local ecology and species. The redbelly tilapia is an important food fish and sometimes aquacultured. The species was named by Paul Gervais in honor of M. (probably Monsieur) Zill, a “distinguished naturalist” who collected the type specimen and sent it to Gervais.
No narrative description available for this taxon yet.
Size & morphology2
Life cycle & reproduction1
Habitat & environment3
Uses & economy1
Other traits3
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Coptodon zillii has left across the world's sequence archives.
At a glance
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
Besides the big genome in the nucleus, cells carry a small, circular loop of DNA inside the cell's energy factories — the mitochondria. It is inherited almost only from the mother and is a leftover from ancient bacteria that moved into the cell. The mitochondrial markers above (ND*, COX, CYTB…) are read from exactly this loop. Outer ring = one strand, inner ring = the other.
The complete instruction manual Coptodon zillii carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
2n 441×GoaT · Animal Genome Size Database
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
Record type4 568 records
Origin
Range
Depth
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions9 of 22 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| FishBaselocation not on record | 395 |
| Bonn, DE | 38 |
| South African Institute for Aquatic Biodiversitylocation not on record | 24 |
| University of Texas Biodiversity Collections (UTBC)location not on record | 19 |
| Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record | 17 |
| Cambridge, US | 17 |
| National Museums of Kenyalocation not on record | 17 |
| Ann Arbor, US | 16 |
| Mexico City, MX | 7 |
| RBINS-Scientific Heritagelocation not on record | 7 |
| Brussels, BE | 7 |
| North Carolina Museum of Natural Scienceslocation not on record | 6 |
| SNSB-Zoologische Staatssammlung Münchenlocation not on record | 5 |
| Toronto, CA | 4 |
| Royal Museum for Central Africalocation not on record | 3 |
| Paris, FR | 2 |
| Tel Aviv University, The Steinhardt Museum of Natural Historylocation not on record | 1 |
| Helsinki, FI | 1 |
| CASlocation not on record | 1 |
| Hebrew University of Jerusalem, Rehovotlocation not on record | 1 |
| Chicago, US | 1 |
| Western Australian Museumlocation not on record | 1 |
Where the DNA of Coptodon zillii was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Where its DNA was found
How strong is each trace?
Modelled climatemodelled
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.