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🌊 Marine Least Concern 🌡️ Deep-water

Jordan's triangular batfish

Malthopsis jordani Gilbert, 1905
Max Length
11 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
185–520 m
Climate
Deep-water
Resilience
Medium
Vulnerability
36.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Jordan's triangular batfish (Malthopsis jordani) is a ray-finned fish of the family Ogcocephalidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 11 cm. It occurs at depths between 185 and 520 metres. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Malthopsis jordani
Authority
Gilbert, 1905
Habitat
Marine
Climate
Deep-water
IUCN Status
LC
Max Length
11 cm
Depth Range
185–520 m
Trophic Level
3.3
Resilience
Medium
Vulnerability
36.00/100
Salinity
30–40 ppt

🐟 Physical Description

This species is distinguished by the following characters: fine reticulate color pattern on dorsal surface (uniformly brown or creamy white in some preserved specimens); eye large, 12.5-14.9% SL; interorbital space narrow, 4.4-6.1% SL, forming a groove; rostral protuberance short and blunt, directed upward; principal bucklers blunt and relatively few in number, naked between principal bucklers; no buckler dorsal to orbit; ventral surface with few small bucklers forming a large naked area; subopercular buckler with 1 spine directed forward; relatively small adult body size (< 70 mm SL) .: other (see remarks); Cross section: flattened.

🌀 Behaviour

Behavioural data for Jordan's triangular batfish 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; bathydemersal; depth range 185 - 520 m . Deep-water endemic to Hawaii.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.3±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.01514 × L2.93 (TL)
Max TL
11cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
36.00/100
Moderate vulnerability
Trophic Level
3.3
Predator
Climate Zone
Deep-water
Described By
Gilbert, 1905

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