Retropinna semoni

Australian smelt

Maximum lifespan

2 yr

AnAge record

mtDNA size

16,577 bp

RefSeq NC_031372.1

GC content

46.86%

Whole genome

Non-coding

925 bp

D-loop 859 bp

Where Australian smelt sits among 2,335 species

Whole-genome GC content against maximum lifespan. Australian smelt has the 2,277th longest lifespan of them.

This species
Other ray-finned fishes
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,577 bp

GC skew (G − C) / (G + C): −0.195
AT skew (A − T) / (A + T): −0.058

Life history

Maximum lifespan: 2 years
Female sexual maturity: 365 days
Male sexual maturity: 365 days

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 04088)

About this record

Lifespan source: AnAge build 15
Based on: an animal in the wild
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 RefSeq

Whole genome16,577 bp

Protein-coding11,412 bp

12S rRNA949 bp

16S rRNA1,737 bp

All tRNA1,554 bp

D-loop859 bp

Genes and regions

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

Base composition of Retropinna semoni genes

ND1NADH dehydrogenase subunit 1	975 bp	19.1%	33.1%	18.9%	28.9%	47.80%	−0.210	−0.269
ND2NADH dehydrogenase subunit 2	1,051 bp	20.2%	31.3%	16.7%	31.9%	48.53%	−0.314	−0.216
COX1Cytochrome c oxidase subunit I	1,551 bp	23.3%	31.3%	19.3%	26.0%	45.39%	−0.148	−0.145
COX2Cytochrome c oxidase subunit II	691 bp	25.6%	27.4%	18.1%	28.9%	47.03%	−0.231	−0.033
ATP8ATP synthase F0 subunit 8	168 bp	23.8%	31.0%	15.5%	29.8%	45.24%	−0.316	−0.130
ATP6ATP synthase F0 subunit 6	684 bp	21.9%	31.4%	15.4%	31.3%	46.64%	−0.342	−0.178
COX3Cytochrome c oxidase subunit III	785 bp	22.9%	29.8%	18.9%	28.4%	47.26%	−0.202	−0.130
ND3NADH dehydrogenase subunit 3	349 bp	20.1%	33.8%	15.8%	30.4%	46.13%	−0.317	−0.255
ND4LNADH dehydrogenase subunit 4L	297 bp	18.5%	30.6%	18.2%	32.7%	50.84%	−0.285	−0.247
ND4NADH dehydrogenase subunit 4	1,381 bp	23.1%	31.0%	18.0%	27.9%	45.91%	−0.215	−0.146
ND5NADH dehydrogenase subunit 5	1,839 bp	24.1%	30.5%	16.1%	29.3%	45.41%	−0.291	−0.116
ND6NADH dehydrogenase subunit 6	522 bp	34.7%	14.8%	18.2%	32.4%	50.58%	−0.280	+0.403
CYTBCytochrome b	1,141 bp	22.6%	30.7%	17.4%	29.4%	46.71%	−0.257	−0.151
12S rRNA12S ribosomal RNA	949 bp	28.7%	21.1%	23.7%	26.6%	50.26%	−0.057	+0.153
16S rRNA16S ribosomal RNA	1,737 bp	31.3%	21.4%	22.4%	25.0%	47.38%	−0.055	+0.188
D-loopControl region (D-loop)	859 bp	28.1%	28.8%	18.5%	24.7%	43.19%	−0.143	−0.012

Codon usage

Counts per codon, darker is more frequent

Gene

3,809 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F6.4%

UUU129

UUC113

Leu L17.2%

UUA50

UUG36

CUU221

CUC147

CUA136

CUG67

Ile I6.9%

AUU181

AUC81

Met M3.4%

AUA51

AUG78

Val V6.8%

GUU87

GUC48

GUA82

GUG42

Ser S7.4%

UCU68

UCC70

UCA68

UCG20

AGU14

AGC43

Pro P5.6%

CCU62

CCC69

CCA66

CCG16

Thr T6.9%

ACU76

ACC95

ACA68

ACG22

Ala A9.5%

GCU123

GCC134

GCA82

GCG24

Tyr Y2.8%

UAU47

UAC59

His H2.8%

CAU38

CAC68

Gln Q2.5%

CAA66

CAG29

Asn N2.7%

AAU31

AAC73

Lys K2.0%

AAA55

AAG21

Asp D1.9%

GAU25

GAC49

Glu E2.7%

GAA54

GAG48

Cys C0.8%

UGU11

UGC18

Trp W3.1%

UGA81

UGG38

Arg R2.0%

CGU15

CGC16

CGA30

CGG16

Gly G6.4%

GGU57

GGC57

GGA74

GGG57

Stop 0.2%

UAA7

UAG0

AGA0

AGG0

Genome map

38 annotated features in NC_031372.1

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 (46.9%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Retropinna semoni (NC_031372.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	68	68 bp	+	–
12S rRNA	Ribosomal RNA	69	1,017	949 bp	+	50.3%
tRNA-Val	Transfer RNA	1,018	1,088	71 bp	+	–
16S rRNA	Ribosomal RNA	1,089	2,825	1,737 bp	+	47.4%
tRNA-Leu (UUR)	Transfer RNA	2,826	2,899	74 bp	+	–
ND1	Protein-coding gene	2,900	3,874	975 bp	+	47.8%
tRNA-Ile	Transfer RNA	3,880	3,951	72 bp	+	–
tRNA-Gln	Transfer RNA	3,951	4,021	71 bp	−	–
tRNA-Met	Transfer RNA	4,021	4,089	69 bp	+	–
ND2	Protein-coding gene	4,093	5,143	1,051 bp	+	48.5%
tRNA-Trp	Transfer RNA	5,144	5,215	72 bp	+	–
tRNA-Ala	Transfer RNA	5,217	5,285	69 bp	−	–
tRNA-Asn	Transfer RNA	5,287	5,359	73 bp	−	–
tRNA-Cys	Transfer RNA	5,391	5,455	65 bp	−	–
tRNA-Tyr	Transfer RNA	5,456	5,523	68 bp	−	–
COX1	Protein-coding gene	5,525	7,075	1,551 bp	+	45.4%
tRNA-Ser (UCN)	Transfer RNA	7,076	7,146	71 bp	−	–
tRNA-Asp	Transfer RNA	7,151	7,222	72 bp	+	–
COX2	Protein-coding gene	7,237	7,927	691 bp	+	47.0%
tRNA-Lys	Transfer RNA	7,928	8,003	76 bp	+	–
ATP8	Protein-coding gene	8,005	8,172	168 bp	+	45.2%
ATP6	Protein-coding gene	8,163	8,846	684 bp	+	46.6%
COX3	Protein-coding gene	8,846	9,630	785 bp	+	47.3%
tRNA-Gly	Transfer RNA	9,631	9,702	72 bp	+	–
ND3	Protein-coding gene	9,703	10,051	349 bp	+	46.1%
tRNA-Arg	Transfer RNA	10,052	10,121	70 bp	+	–
ND4L	Protein-coding gene	10,122	10,418	297 bp	+	50.8%
ND4	Protein-coding gene	10,412	11,792	1,381 bp	+	45.9%
tRNA-His	Transfer RNA	11,793	11,861	69 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,862	11,930	69 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,933	12,005	73 bp	+	–
ND5	Protein-coding gene	12,006	13,844	1,839 bp	+	45.4%
ND6	Protein-coding gene	13,841	14,362	522 bp	−	50.6%
tRNA-Glu	Transfer RNA	14,364	14,434	71 bp	−	–
CYTB	Protein-coding gene	14,437	15,577	1,141 bp	+	46.7%
tRNA-Thr	Transfer RNA	15,578	15,649	72 bp	+	–
tRNA-Pro	Transfer RNA	15,649	15,718	70 bp	−	–
D-loop	Control region	15,719	16,577	859 bp	–	43.2%