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🌊 Marine Least Concern 🌡️ Deep-water

Smalltooth dragonfish

Pachystomias microdon Günther, 1878
Small-toothed Dragonfish (Pachystomias microdon)
Small-toothed Dragonfish (Pachystomias microdon)
Max Length
22.1 cm
Max Weight
Lifespan
Trophic Level
4.2
Depth
660–4000 m
Climate
Deep-water
Resilience
Medium
Vulnerability
35.00/100
Typical Length
Depth Zone
deep-water

📖 Overview

Smalltooth dragonfish (Pachystomias microdon) is a ray-finned fish of the family Stomiidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 22.1 cm. It occurs at depths between 660 and 4000 metres. With a trophic level of 4.2, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Pachystomias microdon
Authority
Günther, 1878
Habitat
Marine
Climate
Deep-water
Body Shape
Elongated
IUCN Status
LC
Max Length
22.1 cm
Depth Range
660–4000 m
Latitude
37°S – 50°N
Trophic Level
4.2
Resilience
Medium
Vulnerability
35.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Stomiiformes
Stomiiformes
Family
Stomiidae
Stomiidae
Genus
Pachystomias
Pachystomias
Species
Smalltooth dragonfish
Pachystomias microdon

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 20 - 24; Anal spines: 0; Anal soft rays: 23 - 28. Body moderately elongated, slightly compressed. Snout shorter than eye. Jaws slender, gape slightly curved upward. Barbel slender, tapering without a bulb. Velvety dark brown to black .: elongated.

🌀 Behaviour

Behavioural data for Smalltooth dragonfish is currently being reviewed.

🦐 Diet

Diet information for Smalltooth dragonfish is currently being compiled.

🥚 Reproduction

Reproduction data for Smalltooth dragonfish is currently being compiled.

🌍 Habitat & Distribution

Marine; bathypelagic; depth range 660 - 4000 m . Deep-water; 50°N - 37°S, 65°W - 154°W south of the equator.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
4.2±0.73

📐 Morphometrics

Length–Weight Relationship: W = 0.00309 × L3.12 (TL)
Max TL
22.1cm
Dorsal Rays
22
Anal Rays
26

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2013

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
35.00/100
Low vulnerability
Trophic Level
4.2
Apex / Top predator
Body Shape
Elongated
Climate Zone
Deep-water
Latitude Range
50°N – 37°S
Described By
Günther, 1878

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Small-toothed Dragonfish · Smalltooth dragonfish
🌍CES svítivník malozubý
🇫🇮Finnish tasapiikkisuu
🇯🇵Japanese Kurenaihoshieso · クレナイホシエソ
🇵🇹Portuguese Peixe-dragão-de-dentes-pequenos
🇷🇺Russian Малозубая пахистомия
🇨🇳Chinese 厚巨口魚 · 小牙厚巨口魚 · 巨口魚

Scientific Synonyms

Scientific Name Author Year Status
Aristostomias brattstroemii Koefoed 1956 Synonym
Echiostoma microdon Günther 1878 Synonym
Pachistomias microdon Günther 1878 Synonym
Pachystomias atlanticus Regan & Trewavas 1930 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) — 11 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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