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🌊 Marine Least Concern 🌡️ Deep-water

Gigantactis Longicirra

Gigantactis longicirra Waterman, 1939
Max Length
-
Max Weight
-
Lifespan
-
Trophic Level
4.1
Depth
1000–2300 m
Climate
Deep-water
Resilience
-
Vulnerability
19.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Gigantactis Longicirra (Gigantactis longicirra), first described by Waterman, 1939 is a fish in the family Gigantactinidae (order Lophiiformes). It inhabits marine coastal and open-ocean environments. Recorded depth range: 1000 to 2300 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
Gigantactis longicirra
Authority
Waterman, 1939
Habitat
Marine
Climate
Deep-water
IUCN Status
LC
Depth Range
1000–2300 m
Trophic Level
4.1
Vulnerability
19.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 8 - 10; Anal soft rays: 6 - 8. Characterized by having relatively high number of dorsal fin rays 8-10; metamorphosed females characterized by: having 3 or fewer distal escal filaments, proximal anterolateral group of short filaments, and posterior proximal group of long filaments; first and last dorsal fin rays distinctly longer than intermediate rays; length of illicium less than 120%SL; escal bulb without distal prolongation or papillae; relatively long dentary, in five or six longitudinal series; prolonged first and eighth rays of caudal fin, 60-100%SL. Metamorphosed male: eyes small, diameter 0.45-0.5 mm; olfactory lamellae 11; upper denticular teeth 3; lower denticular teeth 4; skin naked, unpigmented. Larvae: lacking dorsal subdermal pigment .

🌀 Behaviour

Behavioural data for Gigantactis Longicirra 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 1000 - 2300 m . Deep-water known from the Gulf of Guinea.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
4.1±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L3.04 (TL)
Dorsal Rays
9
Anal Rays
7

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2014

📊 Population Risk & Fisheries

Fishing Vulnerability
19.00/100
Low vulnerability
Trophic Level
4.1
Apex / Top predator
Climate Zone
Deep-water
Described By
Waterman, 1939

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 3 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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