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🌊 Marine Least Concern 🌡️ Tropical

Red-Lined Jawfish

Opistognathus rufilineatus Vaniz & Allen, 2007
Max Length
7.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
2–35 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Specimens were collected on the edge of a 200 m-wide channel between the mainland and a small island, where the area is exposed to periodic strong currents associated with tidal fluctuation. It is characterized by relatively rich coral grading to rubble in deeper water with a maximum depth of about 50 m. It has a series of vents, at depths of about 2-35 m, which releases large volumes of freshwater and the abrupt salinity changes are visible due to the blurring effect of the fresh- and seawater mixture. About 10 burrows of this species were detected on rubble bottoms in about 20-25 m depth during the 2006 and 2007 visits. The two type specimens were taken from their burrows using a clove oil-alcohol solution .

Scientific Name
Opistognathus rufilineatus
Authority
Vaniz & Allen, 2007
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
7.9 cm
Depth Range
2–35 m
Trophic Level
3.4
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 11; Dorsal soft rays (total): 11; Anal spines: 2; Anal soft rays: 10; Vertebrae: 26. This species is distinguished by the following characters: upper jaw extending about 0.7-0.9 eye diameters behind posterior margin of orbit, the maxilla widest at end, without a flexible lamina posteriorly; D XI,11; A II,10. Colouration: body generally yellowish brown, slightly darker on back, with narrow red-brown stripes outlining each yellow-tan lateral scale row and fins without dark spots are distinctive markings; cheeks with a few scattered, small, dark, brown spots, also with narrow oblique lines; posterior infraorbital pore positions occupied by multiple pores; most preopercular pore positions bi-pored .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Red-Lined Jawfish 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 2 - 35 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.4±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
7.9cm
Dorsal Spines
11
Dorsal Rays
11
Anal Spines
2
Anal Rays
10
Vertebrae
26

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Vaniz & Allen, 2007

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