Gambusia holbrooki
Eastern mosquitofish
GC content
45.04%
Whole genome
Non-coding
1,029 bp
D-loop 858 bp
Where Eastern mosquitofish sits among 2,335 species
Whole-genome GC content against maximum lifespan. Eastern mosquitofish has the 2,304th longest lifespan of them.
- This species
- Other ray-finned fishes
- Other classes
Base composition
Whole genome16,611 bp
- GC skew (G − C) / (G + C)
- −0.305
- AT skew (A − T) / (A + T)
- +0.018
About this record
- Lifespan source
- FishBase v26.06
- Based on
- an animal in the wild
- Data quality
- acceptable
- Licence
- CC BY-NC 4.0
- Status
- New in build 2
- In the database since
- build 2 (2026-11-13)
The lifespan value is for non-commercial use only; the genome data is not restricted by it.
Every change against the 2015 build is in the changelog download.
Composition by region
Reference (L) strand as deposited in RefSeqWhole genome16,611 bp
Protein-coding11,415 bp
12S rRNA947 bp
16S rRNA1,676 bp
All tRNA1,549 bp
D-loop858 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 975 bp | 45.95% | −0.366 | −0.074 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,047 bp | 46.23% | −0.496 | −0.012 | |||||
| COX1Cytochrome c oxidase subunit I | 1,557 bp | 45.54% | −0.230 | −0.078 | |||||
| COX2Cytochrome c oxidase subunit II | 691 bp | 44.28% | −0.301 | +0.029 | |||||
| ATP8ATP synthase F0 subunit 8 | 168 bp | 41.67% | −0.571 | +0.143 | |||||
| ATP6ATP synthase F0 subunit 6 | 684 bp | 45.03% | −0.409 | −0.106 | |||||
| COX3Cytochrome c oxidase subunit III | 786 bp | 48.47% | −0.312 | −0.037 | |||||
| ND3NADH dehydrogenase subunit 3 | 351 bp | 43.02% | −0.364 | −0.150 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 48.82% | −0.393 | −0.118 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,386 bp | 46.10% | −0.415 | −0.074 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,833 bp | 43.26% | −0.387 | −0.063 | |||||
| ND6NADH dehydrogenase subunit 6 | 522 bp | 49.04% | −0.461 | +0.331 | |||||
| CYTBCytochrome b | 1,140 bp | 46.32% | −0.352 | −0.118 | |||||
| 12S rRNA12S ribosomal RNA | 947 bp | 46.89% | −0.135 | +0.241 | |||||
| 16S rRNA16S ribosomal RNA | 1,676 bp | 44.21% | −0.139 | +0.232 | |||||
| D-loopControl region (D-loop) | 858 bp | 36.83% | −0.203 | −0.015 |
Codon usage
Counts per codon, darker is more frequent3,812 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F6.7%
UUU130
UUC124
Leu L17.7%
UUA98
UUG28
CUU172
CUC154
CUA186
CUG36
Ile I6.7%
AUU151
AUC106
Met M4.0%
AUA105
AUG46
Val V5.2%
GUU54
GUC54
GUA69
GUG22
Ser S6.8%
UCU63
UCC80
UCA52
UCG7
AGU15
AGC42
Pro P5.8%
CCU53
CCC107
CCA53
CCG7
Thr T8.3%
ACU57
ACC137
ACA113
ACG8
Ala A8.5%
GCU67
GCC139
GCA105
GCG14
Tyr Y2.9%
UAU46
UAC64
His H2.8%
CAU34
CAC72
Gln Q2.5%
CAA78
CAG19
Asn N3.1%
AAU35
AAC85
Lys K2.0%
AAA69
AAG8
Asp D1.9%
GAU27
GAC47
Glu E2.5%
GAA73
GAG22
Cys C0.8%
UGU11
UGC19
Trp W3.1%
UGA99
UGG20
Arg R2.0%
CGU13
CGC22
CGA32
CGG9
Gly G6.3%
GGU29
GGC96
GGA64
GGG53
Stop 0.3%
UAA9
UAG2
AGA1
AGG0
Genome map
38 annotated features in NC_028274.1Hover, tap or tab to a feature to see its position, length, strand and GC content. Genes and rRNAs open their own pages.
- Protein-coding13
- rRNA2
- tRNA22
- D-loop1
- Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
- Middle ring: GC% of each gene against the whole genome (45.0%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
| Feature | Type | Start | End | Length | Strand | GC |
|---|---|---|---|---|---|---|
| tRNA-Phe | Transfer RNA | 1 | 69 | 69 bp | + | – |
| 12S rRNA | Ribosomal RNA | 70 | 1,016 | 947 bp | + | 46.9% |
| tRNA-Val | Transfer RNA | 1,017 | 1,088 | 72 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,089 | 2,764 | 1,676 bp | + | 44.2% |
| tRNA-Leu (UUR) | Transfer RNA | 2,765 | 2,838 | 74 bp | + | – |
| ND1 | Protein-coding gene | 2,839 | 3,813 | 975 bp | + | 46.0% |
| tRNA-Ile | Transfer RNA | 3,820 | 3,889 | 70 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,889 | 3,959 | 71 bp | − | – |
| tRNA-Met | Transfer RNA | 3,959 | 4,027 | 69 bp | + | – |
| ND2 | Protein-coding gene | 4,028 | 5,074 | 1,047 bp | + | 46.2% |
| tRNA-Trp | Transfer RNA | 5,073 | 5,143 | 71 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,147 | 5,215 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,217 | 5,289 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,327 | 5,390 | 64 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,391 | 5,460 | 70 bp | − | – |
| COX1 | Protein-coding gene | 5,462 | 7,018 | 1,557 bp | + | 45.5% |
| tRNA-Ser (UCN) | Transfer RNA | 7,024 | 7,094 | 71 bp | − | – |
| tRNA-Asp | Transfer RNA | 7,097 | 7,168 | 72 bp | + | – |
| COX2 | Protein-coding gene | 7,178 | 7,868 | 691 bp | + | 44.3% |
| tRNA-Lys | Transfer RNA | 7,869 | 7,941 | 73 bp | + | – |
| ATP8 | Protein-coding gene | 7,943 | 8,110 | 168 bp | + | 41.7% |
| ATP6 | Protein-coding gene | 8,101 | 8,784 | 684 bp | + | 45.0% |
| COX3 | Protein-coding gene | 8,784 | 9,569 | 786 bp | + | 48.5% |
| tRNA-Gly | Transfer RNA | 9,569 | 9,639 | 71 bp | + | – |
| ND3 | Protein-coding gene | 9,640 | 9,990 | 351 bp | + | 43.0% |
| tRNA-Arg | Transfer RNA | 9,989 | 10,058 | 70 bp | + | – |
| ND4L | Protein-coding gene | 10,059 | 10,355 | 297 bp | + | 48.8% |
| ND4 | Protein-coding gene | 10,349 | 11,734 | 1,386 bp | + | 46.1% |
| tRNA-His | Transfer RNA | 11,828 | 11,897 | 70 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 11,898 | 11,966 | 69 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,976 | 12,048 | 73 bp | + | – |
| ND5 | Protein-coding gene | 12,049 | 13,881 | 1,833 bp | + | 43.3% |
| ND6 | Protein-coding gene | 13,878 | 14,399 | 522 bp | − | 49.0% |
| tRNA-Glu | Transfer RNA | 14,400 | 14,468 | 69 bp | − | – |
| CYTB | Protein-coding gene | 14,473 | 15,612 | 1,140 bp | + | 46.3% |
| tRNA-Thr | Transfer RNA | 15,613 | 15,685 | 73 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,685 | 15,753 | 69 bp | − | – |
| D-loop | Control region | 15,754 | 16,611 | 858 bp | – | 36.8% |