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🌊 Marine Least Concern 🌡️ Deep-water

Twolight Dragonfish

Eustomias micraster Parr, 1927
Max Length
12.8 cm
Max Weight
-
Lifespan
-
Trophic Level
4.2
Depth
0–1807 m
Climate
Deep-water
Resilience
Medium
Vulnerability
35.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Twolight Dragonfish (Eustomias micraster), first described by Parr, 1927 is a small fish in the family Stomiidae (order Stomiiformes). Adults typically reach 12.80 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 0 to 1807 metres. It occurs in Deep-water waters. Diet is predominantly piscivorous, targeting other fish and larger prey. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Eustomias micraster
Authority
Parr, 1927
Habitat
Marine
Climate
Deep-water
Body Shape
Elongated
IUCN Status
LC
Max Length
12.8 cm
Depth Range
0–1807 m
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
Eustomias
Eustomias
Species
Twolight Dragonfish
Eustomias micraster

🐟 Physical Description

Two terminal bulbs separated by a long interspace (usually 2.6-7.8 times length of distal bulb; 2.3-4 times of proximal bulb length). Barbel less than 60% SL. Terminal filament long, 16-21% SL with 4 or more short, bulblet-bearing branches near the bulb, the branches usually with expanded tips. Distal bulb shorter than proximal bulb in specimens over 9 cm SL; not more than 1.25 times the proximal bulb in smaller specimens, never longer than 1 mm. Axis of stem and external chevron-shaped or roundish striated areas moderately to darkly pigmented. Middorsal paired spots between occiput and dorsal-fin origin undetermined .: elongated.

🌀 Behaviour

Behavioural data for Twolight Dragonfish is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; bathypelagic; depth range 0 - 1807 m . Deep-water Central Atlantic: the Caribbean.

🌿 Ecology

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

📐 Morphometrics

Length–Weight Relationship: W = 0.00309 × L3.12 (TL)
Max TL
12.8cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 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
Described By
Parr, 1927

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Twolight Dragonfish
🌍CES svítivka eleutherský
🇵🇹Portuguese Peixe-dragão-de-Eleuthera

Scientific Synonyms

Scientific Name Author Year Status
Eustomias bibulbosus micraster Parr 1927 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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