🧬 Biological Classification (Kingdom to Species)Maurolicus japonicus
Kingdom
Animalia
Phylum
Chordata
Class
Actinopteri
Order
Stomiiformes
Family
Sternoptychidae
Genus
Maurolicus
Species
Maurolicus japonicus
📏 True-scale comparison (1 m = 1 m) against a 1.75 m humanLength 5cm
050cm1m1.5mHuman 1.75mNorth Pacific lightfishdrawing width = body length · 5cm × 3.7cm
🔍 Zoomed View — Same scale as a credit card & 2.65cm coin
Card 8.56cmCoin 2.65cmNorth Pacific lightfish 5cm
  • · Grid units represent actual meters (m); human and animals are drawn to the exact same scale with original silhouette aspect ratios preserved.
  • · When a size range is recorded (e.g. 1–1.6m), the lower bound is used for scale comparison.
  • · North Pacific lightfish silhouette: PhyloPic — Christopher Kenaley · CC0 1.0 (Sternoptyx pseudobscura)
  • · Human silhouette: PhyloPic — NASA · Public Domain Mark 1.0
• Length vs. 1.75 m human: 0.03× Compare with other species →
Actinopteri❔ Diet unknown

North Pacific lightfish

Maurolicus japonicus (North Pacific lightfish · キュウリエソ)

🛡️ Conservation Status (IUCN Red List)LC (Least Concern)
DDData Deficient
LCLeast Concern
NTNear Threatened
VUVulnerable
ENEndangered
CRCritically End.
EWExtinct in Wild
EXExtinct
Geological Era
Extant
Diet
No data
Length · Height
5cm · No data
Mass · Top Speed
No data · No data
Habitat & Fossil Locality
Deep sea from waters south of Japan to around Hawaii (depths of 50–400 m)

💡 Everyday Comparisons for Size, Mass & Speed

  • 💡 Its maximum length of 5 cm is about twice the diameter of a Korean 500-won coin (26.5 mm) (Comparison).
  • 💡 Its maximum length of 5 cm is less than 1/4 of the short side of an A4 sheet of paper (21 cm) (Comparison).

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

#앨퉁이#Maurolicus japonicus

📖 1. Overview

The North Pacific lightfish is a small deep-sea fish living from Toyama Bay and the Pacific coast of Honshu, Japan, to the Ryukyu Islands, the Ogasawara Islands, and around Hawaii.

🦴 2. Anatomy & Morphology

It is a tiny fish reaching a maximum body length of only 5 cm.

🔍 3. Ecology & Behavior

It is recorded as living in waters just above the bottom in the deep sea, though its diet and reproduction are not listed in FishBase.

🇰🇷 4. Connection to Korea

It is listed on the National List of Species of Korea (National Institute of Biological Resources (NIBR)).

📚 Sources & References

Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.

🔗 Related & Comparable Species

DATA & LICENSE

📚 Data & Image Sources and Licenses

Full Citation Principles →
① Photos: Wikimedia Commons

Every photo's author and license is verified via the Wikimedia Commons API (PD, CC0, CC BY, CC BY-SA) and displayed with full attribution and source links.

② Summaries: Wikipedia

Wikipedia summary excerpts on detail pages are licensed under CC BY-SA 4.0 and linked to the original article.

③ Measurements & IUCN Status

Length, mass, and speed are representative estimates from published literature. Conservation status follows IUCN Red List categories (iucnredlist.org).

④ Silhouettes & Scale Diagrams

Silhouettes on the size comparison stage use open-licensed PhyloPic illustrations and custom body diagrams drawn at an exact 1m = 1m scale.

Expert review: looking for reviewers · compiled by quoting official (English) sources

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