New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine Least Concern 🌡️ Deep-water

Pylorobranchus Hearstorum

Pylorobranchus hearstorum McCosker, 2014
Max Length
121.8 cm
Max Weight
-
Lifespan
-
Trophic Level
4.5
Depth
892–966 m
Climate
Deep-water
Resilience
Medium
Vulnerability
59.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Pylorobranchus Hearstorum (Pylorobranchus hearstorum), first described by McCosker, 2014 is a very large fish. Adults typically reach 121.80 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 892 to 966 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
Pylorobranchus hearstorum
Authority
McCosker, 2014
Habitat
Marine
Climate
Deep-water
IUCN Status
LC
Max Length
121.8 cm
Depth Range
892–966 m
Trophic Level
4.5
Resilience
Medium
Vulnerability
59.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Pylorobranchus
Pylorobranchus
Species
Pylorobranchus Hearstorum
Pylorobranchus hearstorum

🐟 Physical Description

This elongate myrophine is distinguished by the following characteristics: tail 66% of TL; dorsal fin arise in the posterior trunk region; dorsal fin is slightly elevated, while anal fin is very elevated; developed, wedge-shaped pectoral fin, about four times eye diameter; moderate eye, 17 in HL; rear margin of orbit is above posterior third of upper jaw; small cephalic pores, SO 1 x 3, IO 5 x 2, POM 7 x 3 (2 right), and ST 3 present; needle-shaped teeth, not enlarged, slightly retrorse, uniserial on jaws and vomer; body color brownish black, median fins grayish black, with anal-fin membrane black posteriorly; vertebral formula 39/66/226 .: eel-like; Cross section: compressed.

🌀 Behaviour

Behavioural data for Pylorobranchus Hearstorum 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; benthopelagic; depth range 892 - 966 m . Deep-water Central Pacific: Philippines.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
4.5±0.8

📐 Morphometrics

Length–Weight Relationship: W = 0.00076 × L3.06 (TL)
Max TL
121.8cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
59.00/100
High vulnerability
Trophic Level
4.5
Apex / Top predator
Climate Zone
Deep-water
Described By
McCosker, 2014

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Pylorobranchus Hearstorum ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.