Hippocampus erectus

Lined seahorse, or Hudson sea horse

Maximum lifespan

4.7 yr

AnAge record

mtDNA size

16,529 bp

RefSeq NC_022722.1

GC content

39.66%

Whole genome

Non-coding

946 bp

D-loop 879 bp

Where Lined seahorse, or Hudson sea horse sits among 2,335 species

Whole-genome GC content against maximum lifespan. Lined seahorse, or Hudson sea horse has the 2,062nd longest lifespan of them.

This species
Other ray-finned fishes
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,529 bp

GC skew (G − C) / (G + C): −0.227
AT skew (A − T) / (A + T): +0.053

Life history

Maximum lifespan: 4.7 years
Female sexual maturity: 273 days
Male sexual maturity: 273 days

Lifespan from AnAge · AnAge record · other traits from AnAge Build 15 (HAGRID 04054)

About this record

Lifespan source: AnAge build 15
Based on: an animal in captivity
Data quality: acceptable, large sample
Licence: Free to use, subject to the Human Ageing Genomic Resources conditions of use
Status: Updated in build 2
In the database since: build 1 (2015-07-01)
Last changed: 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 genome16,529 bp

Protein-coding11,399 bp

12S rRNA938 bp

16S rRNA1,697 bp

All tRNA1,549 bp

D-loop879 bp

Genes and regions

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

Base composition of Hippocampus erectus genes

ND1NADH dehydrogenase subunit 1	975 bp	31.3%	28.3%	13.8%	26.6%	40.41%	−0.315	+0.050
ND2NADH dehydrogenase subunit 2	1,039 bp	31.9%	26.8%	12.6%	28.8%	41.39%	−0.391	+0.087
COX1Cytochrome c oxidase subunit I	1,554 bp	26.8%	31.8%	17.8%	23.7%	41.44%	−0.143	−0.086
COX2Cytochrome c oxidase subunit II	691 bp	31.4%	29.4%	16.1%	23.2%	39.22%	−0.181	+0.033
ATP8ATP synthase F0 subunit 8	168 bp	38.7%	27.4%	8.9%	25.0%	33.93%	−0.474	+0.171
ATP6ATP synthase F0 subunit 6	684 bp	29.7%	31.1%	11.8%	27.3%	39.18%	−0.396	−0.024
COX3Cytochrome c oxidase subunit III	784 bp	26.9%	30.9%	16.7%	25.5%	42.22%	−0.208	−0.068
ND3NADH dehydrogenase subunit 3	349 bp	26.1%	33.8%	14.9%	25.2%	40.12%	−0.257	−0.129
ND4LNADH dehydrogenase subunit 4L	297 bp	27.9%	27.3%	13.8%	31.0%	44.78%	−0.383	+0.012
ND4NADH dehydrogenase subunit 4	1,381 bp	30.1%	30.1%	13.0%	26.8%	39.75%	−0.348	0.000
ND5NADH dehydrogenase subunit 5	1,836 bp	32.0%	30.3%	13.2%	24.5%	37.69%	−0.298	+0.026
ND6NADH dehydrogenase subunit 6	522 bp	43.3%	18.4%	11.5%	26.8%	38.31%	−0.400	+0.404
CYTBCytochrome b	1,141 bp	28.3%	30.9%	15.1%	25.8%	40.84%	−0.262	−0.043
12S rRNA12S ribosomal RNA	938 bp	33.9%	24.9%	19.2%	22.0%	41.15%	−0.067	+0.152
16S rRNA16S ribosomal RNA	1,697 bp	37.3%	24.7%	18.6%	19.4%	38.01%	−0.020	+0.203
D-loopControl region (D-loop)	879 bp	34.9%	31.6%	13.2%	20.3%	33.45%	−0.211	+0.050

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 F5.9%

UUU121

UUC104

Leu L16.6%

UUA190

UUG27

CUU108

CUC61

CUA202

CUG43

Ile I7.8%

AUU166

AUC129

Met M5.2%

AUA161

AUG38

Val V5.7%

GUU66

GUC33

GUA98

GUG18

Ser S7.1%

UCU59

UCC46

UCA100

UCG16

AGU18

AGC33

Pro P5.7%

CCU55

CCC81

CCA66

CCG13

Thr T7.7%

ACU66

ACC71

ACA146

ACG10

Ala A7.8%

GCU80

GCC84

GCA120

GCG12

Tyr Y3.0%

UAU59

UAC56

His H2.7%

CAU32

CAC70

Gln Q2.5%

CAA89

CAG6

Asn N3.7%

AAU64

AAC76

Lys K2.2%

AAA74

AAG8

Asp D1.8%

GAU38

GAC32

Glu E2.6%

GAA80

GAG19

Cys C0.6%

UGU10

UGC13

Trp W3.2%

UGA106

UGG16

Arg R1.9%

CGU6

CGC7

CGA52

CGG8

Gly G6.2%

GGU53

GGC48

GGA83

GGG52

Stop 0.2%

UAA7

UAG0

AGA0

AGG0

Genome map

38 annotated features in NC_022722.1

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 (39.7%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

All 38 features as a table

Annotated features of Hippocampus erectus (NC_022722.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	71	71 bp	+	–
12S rRNA	Ribosomal RNA	72	1,009	938 bp	+	41.2%
tRNA-Val	Transfer RNA	1,010	1,082	73 bp	+	–
16S rRNA	Ribosomal RNA	1,083	2,779	1,697 bp	+	38.0%
tRNA-Leu (UUR)	Transfer RNA	2,780	2,853	74 bp	+	–
ND1	Protein-coding gene	2,854	3,828	975 bp	+	40.4%
tRNA-Ile	Transfer RNA	3,830	3,901	72 bp	+	–
tRNA-Gln	Transfer RNA	3,901	3,971	71 bp	−	–
tRNA-Met	Transfer RNA	3,973	4,042	70 bp	+	–
ND2	Protein-coding gene	4,043	5,081	1,039 bp	+	41.4%
tRNA-Trp	Transfer RNA	5,082	5,152	71 bp	+	–
tRNA-Ala	Transfer RNA	5,154	5,222	69 bp	−	–
tRNA-Asn	Transfer RNA	5,224	5,296	73 bp	−	–
tRNA-Cys	Transfer RNA	5,333	5,398	66 bp	−	–
tRNA-Tyr	Transfer RNA	5,399	5,465	67 bp	−	–
COX1	Protein-coding gene	5,467	7,020	1,554 bp	+	41.4%
tRNA-Ser (UCN)	Transfer RNA	7,022	7,092	71 bp	−	–
tRNA-Asp	Transfer RNA	7,107	7,174	68 bp	+	–
COX2	Protein-coding gene	7,179	7,869	691 bp	+	39.2%
tRNA-Lys	Transfer RNA	7,870	7,944	75 bp	+	–
ATP8	Protein-coding gene	7,946	8,113	168 bp	+	33.9%
ATP6	Protein-coding gene	8,104	8,787	684 bp	+	39.2%
COX3	Protein-coding gene	8,787	9,570	784 bp	+	42.2%
tRNA-Gly	Transfer RNA	9,571	9,640	70 bp	+	–
ND3	Protein-coding gene	9,641	9,989	349 bp	+	40.1%
tRNA-Arg	Transfer RNA	9,990	10,058	69 bp	+	–
ND4L	Protein-coding gene	10,059	10,355	297 bp	+	44.8%
ND4	Protein-coding gene	10,349	11,729	1,381 bp	+	39.8%
tRNA-His	Transfer RNA	11,730	11,798	69 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,799	11,866	68 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,869	11,941	73 bp	+	–
ND5	Protein-coding gene	11,942	13,777	1,836 bp	+	37.7%
ND6	Protein-coding gene	13,774	14,295	522 bp	−	38.3%
tRNA-Glu	Transfer RNA	14,296	14,364	69 bp	−	–
CYTB	Protein-coding gene	14,369	15,509	1,141 bp	+	40.8%
tRNA-Thr	Transfer RNA	15,510	15,581	72 bp	+	–
tRNA-Pro	Transfer RNA	15,581	15,650	70 bp	−	–
D-loop	Control region	15,651	16,529	879 bp	–	33.5%