Fundulus catenatus
Northern studfish
GC content
40.08%
Whole genome
Non-coding
962 bp
D-loop 881 bp
Where Northern studfish sits among 2,335 species
Whole-genome GC content against maximum lifespan. Northern studfish has the 1,999th longest lifespan of them.
- This species
- Other ray-finned fishes
- Other classes
Base composition
Whole genome16,544 bp
- GC skew (G − C) / (G + C)
- −0.240
- AT skew (A − T) / (A + T)
- −0.036
About this record
- Lifespan source
- AnAge build 15
- Based on
- an observed animal, origin not stated
- Data quality
- acceptable, medium sample
- Licence
- Free to use, subject to the Human Ageing Genomic Resources conditions of use
- Status
- New in build 2
- In the database since
- build 2 (2026-11-13)
Every change against the 2015 build is in the changelog download.
Composition by region
Reference (L) strand as deposited in RefSeqWhole genome16,544 bp
Protein-coding11,403 bp
12S rRNA954 bp
16S rRNA1,680 bp
All tRNA1,546 bp
D-loop881 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 975 bp | 39.28% | −0.300 | −0.186 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,046 bp | 39.96% | −0.416 | −0.096 | |||||
| COX1Cytochrome c oxidase subunit I | 1,548 bp | 40.05% | −0.165 | −0.129 | |||||
| COX2Cytochrome c oxidase subunit II | 691 bp | 38.06% | −0.224 | −0.033 | |||||
| ATP8ATP synthase F0 subunit 8 | 168 bp | 34.52% | −0.414 | +0.091 | |||||
| ATP6ATP synthase F0 subunit 6 | 684 bp | 37.72% | −0.388 | −0.141 | |||||
| COX3Cytochrome c oxidase subunit III | 785 bp | 39.87% | −0.176 | −0.161 | |||||
| ND3NADH dehydrogenase subunit 3 | 349 bp | 41.26% | −0.292 | −0.171 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 42.09% | −0.328 | −0.163 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,381 bp | 38.38% | −0.336 | −0.105 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,839 bp | 39.37% | −0.381 | −0.078 | |||||
| ND6NADH dehydrogenase subunit 6 | 522 bp | 41.76% | −0.486 | +0.368 | |||||
| CYTBCytochrome b | 1,140 bp | 40.00% | −0.289 | −0.117 | |||||
| 12S rRNA12S ribosomal RNA | 954 bp | 44.24% | −0.024 | +0.162 | |||||
| 16S rRNA16S ribosomal RNA | 1,680 bp | 39.94% | −0.043 | +0.154 | |||||
| D-loopControl region (D-loop) | 881 bp | 36.89% | −0.200 | −0.090 |
Codon usage
Counts per codon, darker is more frequent3,806 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F6.6%
UUU162
UUC90
Leu L17.7%
UUA210
UUG47
CUU164
CUC102
CUA127
CUG22
Ile I7.8%
AUU208
AUC88
Met M4.2%
AUA123
AUG36
Val V5.1%
GUU70
GUC32
GUA77
GUG14
Ser S7.2%
UCU83
UCC64
UCA76
UCG1
AGU26
AGC25
Pro P5.3%
CCU81
CCC65
CCA47
CCG8
Thr T7.4%
ACU89
ACC94
ACA89
ACG10
Ala A8.5%
GCU93
GCC107
GCA114
GCG9
Tyr Y3.1%
UAU68
UAC50
His H2.9%
CAU57
CAC54
Gln Q2.5%
CAA90
CAG6
Asn N3.2%
AAU74
AAC49
Lys K2.0%
AAA68
AAG8
Asp D1.9%
GAU37
GAC37
Glu E2.5%
GAA79
GAG17
Cys C0.8%
UGU14
UGC17
Trp W3.0%
UGA100
UGG15
Arg R1.9%
CGU12
CGC6
CGA45
CGG10
Gly G6.1%
GGU68
GGC45
GGA83
GGG36
Stop 0.2%
UAA8
UAG0
AGA0
AGG0
Genome map
38 annotated features in NC_084079.1Hover, 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 (40.1%, 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 | 68 | 68 bp | + | – |
| 12S rRNA | Ribosomal RNA | 69 | 1,022 | 954 bp | + | 44.2% |
| tRNA-Val | Transfer RNA | 1,023 | 1,096 | 74 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,097 | 2,776 | 1,680 bp | + | 39.9% |
| tRNA-Leu (UUR) | Transfer RNA | 2,777 | 2,850 | 74 bp | + | – |
| ND1 | Protein-coding gene | 2,851 | 3,825 | 975 bp | + | 39.3% |
| tRNA-Ile | Transfer RNA | 3,832 | 3,901 | 70 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,901 | 3,971 | 71 bp | − | – |
| tRNA-Met | Transfer RNA | 3,971 | 4,039 | 69 bp | + | – |
| ND2 | Protein-coding gene | 4,040 | 5,085 | 1,046 bp | + | 40.0% |
| tRNA-Trp | Transfer RNA | 5,086 | 5,157 | 72 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,160 | 5,228 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,231 | 5,303 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,341 | 5,406 | 66 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,407 | 5,474 | 68 bp | − | – |
| COX1 | Protein-coding gene | 5,476 | 7,023 | 1,548 bp | + | 40.1% |
| tRNA-Ser (UCN) | Transfer RNA | 7,032 | 7,102 | 71 bp | − | – |
| tRNA-Asp | Transfer RNA | 7,105 | 7,175 | 71 bp | + | – |
| COX2 | Protein-coding gene | 7,185 | 7,875 | 691 bp | + | 38.1% |
| tRNA-Lys | Transfer RNA | 7,876 | 7,949 | 74 bp | + | – |
| ATP8 | Protein-coding gene | 7,953 | 8,120 | 168 bp | + | 34.5% |
| ATP6 | Protein-coding gene | 8,111 | 8,794 | 684 bp | + | 37.7% |
| COX3 | Protein-coding gene | 8,794 | 9,578 | 785 bp | + | 39.9% |
| tRNA-Gly | Transfer RNA | 9,578 | 9,648 | 71 bp | + | – |
| ND3 | Protein-coding gene | 9,649 | 9,997 | 349 bp | + | 41.3% |
| tRNA-Arg | Transfer RNA | 9,998 | 10,066 | 69 bp | + | – |
| ND4L | Protein-coding gene | 10,067 | 10,363 | 297 bp | + | 42.1% |
| ND4 | Protein-coding gene | 10,357 | 11,737 | 1,381 bp | + | 38.4% |
| tRNA-His | Transfer RNA | 11,738 | 11,806 | 69 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 11,807 | 11,874 | 68 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,882 | 11,954 | 73 bp | + | – |
| ND5 | Protein-coding gene | 11,955 | 13,793 | 1,839 bp | + | 39.4% |
| ND6 | Protein-coding gene | 13,790 | 14,311 | 522 bp | − | 41.8% |
| tRNA-Glu | Transfer RNA | 14,312 | 14,379 | 68 bp | − | – |
| CYTB | Protein-coding gene | 14,383 | 15,522 | 1,140 bp | + | 40.0% |
| tRNA-Thr | Transfer RNA | 15,524 | 15,595 | 72 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,595 | 15,663 | 69 bp | − | – |
| D-loop | Control region | 15,664 | 16,544 | 881 bp | – | 36.9% |