Hippocampus zosterae

Dwarf seahorse

Maximum lifespan

1 yr

AnAge record

mtDNA size

16,521 bp

RefSeq NC_065494.1

GC content

38.44%

Whole genome

Non-coding

947 bp

D-loop 880 bp

Where Dwarf seahorse sits among 2,335 species

Whole-genome GC content against maximum lifespan. Dwarf seahorse has the 2,308th longest lifespan of them.

This species
Other ray-finned fishes
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,521 bp

GC skew (G − C) / (G + C): −0.204
AT skew (A − T) / (A + T): +0.040

Life history

Maximum lifespan: 1 year
Female sexual maturity: 118 days
Male sexual maturity: 118 days

Lifespan from AnAge · AnAge record · other traits from AnAge build 15 (HAGRID 04057)

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 genome16,521 bp

Protein-coding11,399 bp

12S rRNA938 bp

16S rRNA1,688 bp

All tRNA1,549 bp

D-loop880 bp

Genes and regions

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

Base composition of Hippocampus zosterae genes

ND1NADH dehydrogenase subunit 1	975 bp	31.2%	31.1%	14.1%	23.7%	37.74%	−0.255	+0.002
ND2NADH dehydrogenase subunit 2	1,039 bp	33.8%	28.0%	11.9%	26.3%	38.21%	−0.375	+0.093
COX1Cytochrome c oxidase subunit I	1,554 bp	27.0%	33.8%	17.6%	21.6%	39.19%	−0.100	−0.111
COX2Cytochrome c oxidase subunit II	691 bp	31.7%	31.0%	15.6%	21.7%	37.34%	−0.163	+0.012
ATP8ATP synthase F0 subunit 8	168 bp	39.9%	29.2%	7.1%	23.8%	30.95%	−0.538	+0.155
ATP6ATP synthase F0 subunit 6	684 bp	29.5%	33.9%	11.8%	24.7%	36.55%	−0.352	−0.069
COX3Cytochrome c oxidase subunit III	784 bp	26.4%	31.3%	17.2%	25.1%	42.35%	−0.187	−0.084
ND3NADH dehydrogenase subunit 3	349 bp	24.6%	34.1%	14.6%	26.6%	41.26%	−0.292	−0.161
ND4LNADH dehydrogenase subunit 4L	297 bp	28.3%	32.7%	13.1%	25.9%	39.06%	−0.328	−0.072
ND4NADH dehydrogenase subunit 4	1,381 bp	31.0%	31.0%	13.5%	24.5%	38.02%	−0.288	0.000
ND5NADH dehydrogenase subunit 5	1,836 bp	32.4%	31.4%	12.8%	23.4%	36.17%	−0.292	+0.015
ND6NADH dehydrogenase subunit 6	522 bp	43.5%	18.2%	10.3%	28.0%	38.31%	−0.460	+0.410
CYTBCytochrome b	1,141 bp	28.3%	31.3%	15.9%	24.5%	40.40%	−0.215	−0.050
12S rRNA12S ribosomal RNA	938 bp	34.1%	24.4%	19.1%	22.4%	41.47%	−0.080	+0.166
16S rRNA16S ribosomal RNA	1,688 bp	37.3%	24.8%	18.4%	19.5%	37.92%	−0.028	+0.202
D-loopControl region (D-loop)	880 bp	35.0%	31.8%	14.1%	19.1%	33.18%	−0.151	+0.048

Codon usage

Counts per codon, darker is more frequent

Gene

3,805 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.8%

UUU122

UUC98

Leu L16.6%

UUA243

UUG33

CUU115

CUC42

CUA171

CUG27

Ile I7.7%

AUU175

AUC118

Met M5.4%

AUA165

AUG39

Val V5.8%

GUU73

GUC25

GUA90

GUG32

Ser S7.2%

UCU65

UCC38

UCA109

UCG8

AGU22

AGC33

Pro P5.7%

CCU83

CCC51

CCA73

CCG8

Thr T7.6%

ACU62

ACC77

ACA146

ACG6

Ala A7.7%

GCU99

GCC67

GCA116

GCG11

Tyr Y3.1%

UAU64

UAC55

His H2.7%

CAU47

CAC55

Gln Q2.5%

CAA88

CAG6

Asn N3.7%

AAU63

AAC77

Lys K2.2%

AAA78

AAG5

Asp D1.8%

GAU40

GAC29

Glu E2.6%

GAA76

GAG22

Cys C0.6%

UGU14

UGC8

Trp W3.2%

UGA100

UGG22

Arg R1.9%

CGU5

CGC5

CGA54

CGG9

Gly G6.1%

GGU55

GGC30

GGA88

GGG61

Stop 0.2%

UAA6

UAG1

AGA0

AGG0

Genome map

38 annotated features in NC_065494.1

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 (38.4%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Hippocampus zosterae (NC_065494.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	71	71 bp	+	–
12S rRNA	Ribosomal RNA	72	1,009	938 bp	+	41.5%
tRNA-Val	Transfer RNA	1,010	1,082	73 bp	+	–
16S rRNA	Ribosomal RNA	1,083	2,770	1,688 bp	+	37.9%
tRNA-Leu (UUR)	Transfer RNA	2,771	2,844	74 bp	+	–
ND1	Protein-coding gene	2,845	3,819	975 bp	+	37.7%
tRNA-Ile	Transfer RNA	3,821	3,892	72 bp	+	–
tRNA-Gln	Transfer RNA	3,892	3,962	71 bp	−	–
tRNA-Met	Transfer RNA	3,964	4,033	70 bp	+	–
ND2	Protein-coding gene	4,034	5,072	1,039 bp	+	38.2%
tRNA-Trp	Transfer RNA	5,073	5,143	71 bp	+	–
tRNA-Ala	Transfer RNA	5,145	5,213	69 bp	−	–
tRNA-Asn	Transfer RNA	5,215	5,287	73 bp	−	–
tRNA-Cys	Transfer RNA	5,325	5,390	66 bp	−	–
tRNA-Tyr	Transfer RNA	5,391	5,457	67 bp	−	–
COX1	Protein-coding gene	5,459	7,012	1,554 bp	+	39.2%
tRNA-Ser (UCN)	Transfer RNA	7,014	7,084	71 bp	−	–
tRNA-Asp	Transfer RNA	7,098	7,165	68 bp	+	–
COX2	Protein-coding gene	7,170	7,860	691 bp	+	37.3%
tRNA-Lys	Transfer RNA	7,861	7,935	75 bp	+	–
ATP8	Protein-coding gene	7,937	8,104	168 bp	+	31.0%
ATP6	Protein-coding gene	8,095	8,778	684 bp	+	36.6%
COX3	Protein-coding gene	8,778	9,561	784 bp	+	42.4%
tRNA-Gly	Transfer RNA	9,562	9,631	70 bp	+	–
ND3	Protein-coding gene	9,632	9,980	349 bp	+	41.3%
tRNA-Arg	Transfer RNA	9,981	10,049	69 bp	+	–
ND4L	Protein-coding gene	10,050	10,346	297 bp	+	39.1%
ND4	Protein-coding gene	10,340	11,720	1,381 bp	+	38.0%
tRNA-His	Transfer RNA	11,721	11,789	69 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,790	11,857	68 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,860	11,932	73 bp	+	–
ND5	Protein-coding gene	11,933	13,768	1,836 bp	+	36.2%
ND6	Protein-coding gene	13,765	14,286	522 bp	−	38.3%
tRNA-Glu	Transfer RNA	14,287	14,355	69 bp	−	–
CYTB	Protein-coding gene	14,360	15,500	1,141 bp	+	40.4%
tRNA-Thr	Transfer RNA	15,501	15,572	72 bp	+	–
tRNA-Pro	Transfer RNA	15,572	15,641	70 bp	−	–
D-loop	Control region	15,642	16,521	880 bp	–	33.2%