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🌊 Marine Least Concern 🌡️ Temperate

Apterichtus Orientalis

Apterichtus orientalis Machida & Ohta, 1994
Max Length
44.3 cm
Max Weight
-
Lifespan
-
Trophic Level
3.9
Depth
79–81 m
Climate
Temperate
Resilience
High
Vulnerability
28.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Apterichtus Orientalis (Apterichtus orientalis), first described by Machida & Ohta, 1994 is a large fish in the family Ophichthidae (order Anguilliformes). Adults typically reach 44.30 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 79 to 81 metres. It occurs in Temperate waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Apterichtus orientalis
Authority
Machida & Ohta, 1994
Habitat
Marine
Climate
Temperate
IUCN Status
LC
Max Length
44.3 cm
Depth Range
79–81 m
Trophic Level
3.9
Resilience
High
Vulnerability
28.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0; Vertebrae: 133. This species is distinguished by the following characters: tail 1.8, head 12-14, and body depth 53-55 in total length; preopercular pores 3 and pores in supratemporal canal 7; conical teeth, uniserial, 9 in ethmoidal region, 1 tooth on vomer; body coloration uniform pale yellow with small brownish dots, lighter ventrally; MVF 54-132, total vertebrae 131-133 (n=2) .: eel-like.

🌀 Behaviour

Behavioural data for Apterichtus Orientalis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

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

🌍 Habitat & Distribution

Marine; demersal; depth range 79 - 81 m . Temperate Northwest Pacific: known only from the type locality, off the Kii Peninsula, western Japan.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.9±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00093 × L2.99 (TL)
Max TL
44.3cm
Vertebrae
133

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
28.00/100
Low vulnerability
Trophic Level
3.9
Predator
Climate Zone
Temperate
Described By
Machida & Ohta, 1994

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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