Xiphophorus hellerii

Green swordtail

Maximum lifespan

5 yr

AnAge record

mtDNA size

16,635 bp

RefSeq NC_013089.1

GC content

47.82%

Whole genome

Non-coding

1,053 bp

D-loop 857 bp

Where Green swordtail sits among 2,335 species

Whole-genome GC content against maximum lifespan. Green swordtail has the 1,994th longest lifespan of them.

This species
Other ray-finned fishes
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,635 bp

GC skew (G − C) / (G + C): −0.320
AT skew (A − T) / (A + T): +0.036

Life history

Maximum lifespan: 5 years
Female sexual maturity: 304 days
Male sexual maturity: 304 days

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 04008)

About this record

Lifespan source: AnAge build 15
Based on: an animal in captivity
Data quality: questionable, small 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 RefSeq

Whole genome16,635 bp

Protein-coding11,416 bp

12S rRNA946 bp

16S rRNA1,674 bp

All tRNA1,549 bp

D-loop857 bp

Genes and regions

Select a column to sort; select a gene to compare it across species

Base composition of Xiphophorus hellerii genes

ND1NADH dehydrogenase subunit 1	975 bp	24.1%	26.1%	14.4%	35.5%	49.85%	−0.424	−0.039
ND2NADH dehydrogenase subunit 2	1,045 bp	23.7%	25.9%	13.8%	36.6%	50.34%	−0.452	−0.044
COX1Cytochrome c oxidase subunit I	1,557 bp	23.7%	28.3%	18.7%	29.4%	48.04%	−0.222	−0.088
COX2Cytochrome c oxidase subunit II	691 bp	28.1%	26.6%	15.6%	29.7%	45.30%	−0.310	+0.026
ATP8ATP synthase F0 subunit 8	168 bp	28.0%	22.0%	14.3%	35.7%	50.00%	−0.429	+0.119
ATP6ATP synthase F0 subunit 6	684 bp	23.7%	26.0%	13.9%	36.4%	50.29%	−0.448	−0.047
COX3Cytochrome c oxidase subunit III	785 bp	24.2%	26.8%	17.2%	31.8%	49.05%	−0.299	−0.050
ND3NADH dehydrogenase subunit 3	349 bp	20.9%	29.5%	16.0%	33.5%	49.57%	−0.353	−0.170
ND4LNADH dehydrogenase subunit 4L	297 bp	20.9%	27.6%	17.2%	34.3%	51.52%	−0.333	−0.139
ND4NADH dehydrogenase subunit 4	1,386 bp	23.2%	27.8%	14.9%	34.1%	48.99%	−0.393	−0.092
ND5NADH dehydrogenase subunit 5	1,842 bp	26.2%	25.9%	13.1%	34.8%	47.94%	−0.452	+0.005
ND6NADH dehydrogenase subunit 6	519 bp	34.7%	13.9%	13.7%	37.8%	51.45%	−0.468	+0.429
CYTBCytochrome b	1,140 bp	23.8%	27.9%	14.6%	33.7%	48.33%	−0.394	−0.080
12S rRNA12S ribosomal RNA	946 bp	32.3%	18.3%	20.8%	28.5%	49.37%	−0.156	+0.278
16S rRNA16S ribosomal RNA	1,674 bp	33.6%	19.5%	19.3%	27.6%	46.89%	−0.177	+0.264
D-loopControl region (D-loop)	857 bp	30.2%	31.9%	14.8%	23.1%	37.92%	−0.218	−0.026

Codon usage

Counts per codon, darker is more frequent

Gene

3,811 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.5%

UUU127

UUC122

Leu L17.8%

UUA79

UUG37

CUU141

CUC195

CUA164

CUG64

Ile I7.0%

AUU127

AUC138

Met M3.7%

AUA91

AUG51

Val V5.4%

GUU47

GUC68

GUA50

GUG41

Ser S6.8%

UCU42

UCC94

UCA53

UCG14

AGU8

AGC49

Pro P6.0%

CCU21

CCC139

CCA54

CCG13

Thr T7.9%

ACU44

ACC154

ACA88

ACG14

Ala A8.7%

GCU49

GCC179

GCA93

GCG11

Tyr Y2.9%

UAU31

UAC78

His H2.8%

CAU16

CAC90

Gln Q2.7%

CAA86

CAG15

Asn N3.2%

AAU22

AAC100

Lys K1.9%

AAA64

AAG9

Asp D1.9%

GAU16

GAC58

Glu E2.4%

GAA72

GAG19

Cys C0.8%

UGU8

UGC22

Trp W3.2%

UGA85

UGG36

Arg R2.0%

CGU8

CGC23

CGA35

CGG10

Gly G6.2%

GGU31

GGC92

GGA59

GGG56

Stop 0.2%

UAA8

UAG0

AGA0

AGG1

Genome map

38 annotated features in NC_013089.1

Hover, 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 (47.8%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Xiphophorus hellerii (NC_013089.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	69	69 bp	+	–
12S rRNA	Ribosomal RNA	70	1,015	946 bp	+	49.4%
tRNA-Val	Transfer RNA	1,019	1,090	72 bp	+	–
16S rRNA	Ribosomal RNA	1,088	2,761	1,674 bp	+	46.9%
tRNA-Leu (UUR)	Transfer RNA	2,762	2,835	74 bp	+	–
ND1	Protein-coding gene	2,836	3,810	975 bp	+	49.9%
tRNA-Ile	Transfer RNA	3,817	3,884	68 bp	+	–
tRNA-Gln	Transfer RNA	3,884	3,954	71 bp	−	–
tRNA-Met	Transfer RNA	3,954	4,022	69 bp	+	–
ND2	Protein-coding gene	4,023	5,067	1,045 bp	+	50.3%
tRNA-Trp	Transfer RNA	5,068	5,140	73 bp	+	–
tRNA-Ala	Transfer RNA	5,144	5,212	69 bp	−	–
tRNA-Asn	Transfer RNA	5,214	5,286	73 bp	−	–
tRNA-Cys	Transfer RNA	5,324	5,387	64 bp	−	–
tRNA-Tyr	Transfer RNA	5,389	5,458	70 bp	−	–
COX1	Protein-coding gene	5,460	7,016	1,557 bp	+	48.0%
tRNA-Ser (UCN)	Transfer RNA	7,018	7,088	71 bp	−	–
tRNA-Asp	Transfer RNA	7,091	7,161	71 bp	+	–
COX2	Protein-coding gene	7,171	7,861	691 bp	+	45.3%
tRNA-Lys	Transfer RNA	7,862	7,934	73 bp	+	–
ATP8	Protein-coding gene	7,936	8,103	168 bp	+	50.0%
ATP6	Protein-coding gene	8,094	8,777	684 bp	+	50.3%
COX3	Protein-coding gene	8,777	9,561	785 bp	+	49.1%
tRNA-Gly	Transfer RNA	9,562	9,633	72 bp	+	–
ND3	Protein-coding gene	9,634	9,982	349 bp	+	49.6%
tRNA-Arg	Transfer RNA	9,983	10,051	69 bp	+	–
ND4L	Protein-coding gene	10,052	10,348	297 bp	+	51.5%
ND4	Protein-coding gene	10,342	11,727	1,386 bp	+	49.0%
tRNA-His	Transfer RNA	11,846	11,915	70 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,916	11,984	69 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,994	12,066	73 bp	+	–
ND5	Protein-coding gene	12,067	13,908	1,842 bp	+	47.9%
ND6	Protein-coding gene	13,905	14,423	519 bp	−	51.5%
tRNA-Glu	Transfer RNA	14,424	14,492	69 bp	−	–
CYTB	Protein-coding gene	14,497	15,636	1,140 bp	+	48.3%
tRNA-Thr	Transfer RNA	15,637	15,709	73 bp	+	–
tRNA-Pro	Transfer RNA	15,709	15,778	70 bp	+	–
D-loop	Control region	15,779	16,635	857 bp	–	37.9%