Tylosurus crocodilus
Hound needlefish
GC content
43.88%
Whole genome
Non-coding
935 bp
D-loop 873 bp
Where Hound needlefish sits among 2,335 species
Whole-genome GC content against maximum lifespan. Hound needlefish has the 1,918th longest lifespan of them.
- This species
- Other ray-finned fishes
- Other classes
Base composition
Whole genome16,533 bp
- GC skew (G − C) / (G + C)
- −0.325
- AT skew (A − T) / (A + T)
- +0.062
About this record
- Lifespan source
- FishBase v26.06
- Based on
- an observed animal, origin not stated
- 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 genome16,533 bp
Protein-coding11,416 bp
12S rRNA945 bp
16S rRNA1,691 bp
All tRNA1,546 bp
D-loop873 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 975 bp | 44.51% | −0.415 | −0.020 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,046 bp | 46.18% | −0.536 | +0.083 | |||||
| COX1Cytochrome c oxidase subunit I | 1,560 bp | 43.08% | −0.208 | −0.104 | |||||
| COX2Cytochrome c oxidase subunit II | 691 bp | 42.11% | −0.258 | 0.000 | |||||
| ATP8ATP synthase F0 subunit 8 | 168 bp | 41.07% | −0.594 | +0.212 | |||||
| ATP6ATP synthase F0 subunit 6 | 684 bp | 42.40% | −0.448 | −0.076 | |||||
| COX3Cytochrome c oxidase subunit III | 785 bp | 44.71% | −0.333 | −0.014 | |||||
| ND3NADH dehydrogenase subunit 3 | 349 bp | 44.70% | −0.372 | −0.192 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 49.83% | −0.446 | −0.087 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,381 bp | 45.33% | −0.450 | +0.041 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,839 bp | 42.90% | −0.458 | +0.065 | |||||
| ND6NADH dehydrogenase subunit 6 | 522 bp | 46.55% | −0.531 | +0.520 | |||||
| CYTBCytochrome b | 1,141 bp | 45.40% | −0.402 | −0.031 | |||||
| 12S rRNA12S ribosomal RNA | 945 bp | 47.20% | −0.108 | +0.222 | |||||
| 16S rRNA16S ribosomal RNA | 1,691 bp | 42.52% | −0.135 | +0.235 | |||||
| D-loopControl region (D-loop) | 873 bp | 35.85% | −0.214 | +0.011 |
Codon usage
Counts per codon, darker is more frequent3,810 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F6.1%
UUU101
UUC133
Leu L17.2%
UUA89
UUG28
CUU145
CUC180
CUA180
CUG34
Ile I7.8%
AUU174
AUC125
Met M4.1%
AUA117
AUG40
Val V5.0%
GUU63
GUC46
GUA72
GUG10
Ser S6.7%
UCU43
UCC83
UCA74
UCG1
AGU11
AGC42
Pro P5.8%
CCU59
CCC91
CCA68
CCG2
Thr T8.1%
ACU48
ACC118
ACA136
ACG6
Ala A8.7%
GCU72
GCC131
GCA120
GCG8
Tyr Y3.0%
UAU51
UAC63
His H2.7%
CAU32
CAC72
Gln Q2.7%
CAA95
CAG6
Asn N3.2%
AAU32
AAC90
Lys K2.0%
AAA72
AAG4
Asp D2.1%
GAU27
GAC53
Glu E2.6%
GAA91
GAG8
Cys C0.6%
UGU4
UGC20
Trp W3.1%
UGA105
UGG13
Arg R2.0%
CGU4
CGC13
CGA52
CGG6
Gly G6.3%
GGU53
GGC70
GGA93
GGG24
Stop 0.2%
UAA7
UAG0
AGA0
AGG0
Genome map
38 annotated features in NC_063499.1Hover, 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 (43.9%, 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 | 1,014 | 945 bp | + | 47.2% |
| tRNA-Val | Transfer RNA | 1,015 | 1,086 | 72 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,087 | 2,777 | 1,691 bp | + | 42.5% |
| tRNA-Leu (UUR) | Transfer RNA | 2,778 | 2,851 | 74 bp | + | – |
| ND1 | Protein-coding gene | 2,852 | 3,826 | 975 bp | + | 44.5% |
| tRNA-Ile | Transfer RNA | 3,830 | 3,899 | 70 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,899 | 3,969 | 71 bp | − | – |
| tRNA-Met | Transfer RNA | 3,969 | 4,037 | 69 bp | + | – |
| ND2 | Protein-coding gene | 4,038 | 5,083 | 1,046 bp | + | 46.2% |
| tRNA-Trp | Transfer RNA | 5,084 | 5,154 | 71 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,157 | 5,225 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,227 | 5,299 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,337 | 5,402 | 66 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,403 | 5,470 | 68 bp | − | – |
| COX1 | Protein-coding gene | 5,472 | 7,031 | 1,560 bp | + | 43.1% |
| tRNA-Ser (UCN) | Transfer RNA | 7,033 | 7,103 | 71 bp | − | – |
| tRNA-Asp | Transfer RNA | 7,107 | 7,178 | 72 bp | + | – |
| COX2 | Protein-coding gene | 7,184 | 7,874 | 691 bp | + | 42.1% |
| tRNA-Lys | Transfer RNA | 7,875 | 7,949 | 75 bp | + | – |
| ATP8 | Protein-coding gene | 7,951 | 8,118 | 168 bp | + | 41.1% |
| ATP6 | Protein-coding gene | 8,109 | 8,792 | 684 bp | + | 42.4% |
| COX3 | Protein-coding gene | 8,792 | 9,576 | 785 bp | + | 44.7% |
| tRNA-Gly | Transfer RNA | 9,577 | 9,647 | 71 bp | + | – |
| ND3 | Protein-coding gene | 9,648 | 9,996 | 349 bp | + | 44.7% |
| tRNA-Arg | Transfer RNA | 9,997 | 10,065 | 69 bp | + | – |
| ND4L | Protein-coding gene | 10,066 | 10,362 | 297 bp | + | 49.8% |
| ND4 | Protein-coding gene | 10,356 | 11,736 | 1,381 bp | + | 45.3% |
| tRNA-His | Transfer RNA | 11,737 | 11,805 | 69 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 11,806 | 11,873 | 68 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,878 | 11,950 | 73 bp | + | – |
| ND5 | Protein-coding gene | 11,951 | 13,789 | 1,839 bp | + | 42.9% |
| ND6 | Protein-coding gene | 13,786 | 14,307 | 522 bp | − | 46.6% |
| tRNA-Glu | Transfer RNA | 14,308 | 14,375 | 68 bp | − | – |
| CYTB | Protein-coding gene | 14,380 | 15,520 | 1,141 bp | + | 45.4% |
| tRNA-Thr | Transfer RNA | 15,521 | 15,590 | 70 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,591 | 15,660 | 70 bp | − | – |
| D-loop | Control region | 15,661 | 16,533 | 873 bp | – | 35.9% |