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🌊 Marine 🌡️ Subtropical

Blacktip morwong

Goniistius francisi Burridge, 2004
Max Length
27.4 cm
Max Weight
-
Lifespan
-
Trophic Level
2.8
Depth
6–88 m
Climate
Subtropical
Resilience
Medium
Vulnerability
39.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Blacktip morwong (Goniistius francisi) is a ray-finned fish. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 27.4 cm. It occurs at depths between 6 and 88 metres. With a trophic level of 2.8, it is an omnivore, consuming both plant and animal matter.

Scientific Name
Goniistius francisi
Authority
Burridge, 2004
Habitat
Marine
Climate
Subtropical
Max Length
27.4 cm
Depth Range
6–88 m
Trophic Level
2.8
Resilience
Medium
Vulnerability
39.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Goniistius
Goniistius
Species
Blacktip morwong
Goniistius francisi

🐟 Physical Description

Dorsal spines (total): 16 - 17; Dorsal soft rays (total): 31 - 34; Anal spines: 3; Anal soft rays: 8. This species is distinguished by the following characters (paratypes): D XVI,31 (XVI-XVII, 31-34, usually XVII,33); A III, 8; 62 lateral line scales (64-66, usually 64); gill rakers 6+14 (5-6+15-16, often 5+15); body depth 2.83 in SL (2.57-2.76); pelvic fins reaching but not extending past the anus, 5.55 in SL (4.55-5.81); anterior on maxilla and prefrontal have prominent bony knobs; distinct dark diagonal bands, 3 on head, 1 on anterior origin of the dorsal fin to the pelvic fin, 1 behind the 4th dorsal spine to the lower lobe of the caudal fin; upper lobe of caudal fin with black tip .

🌀 Behaviour

Behavioural data for Blacktip morwong 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 6 - 88 m . Subtropical

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
2.8±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
27.4cm
Dorsal Spines
17
Dorsal Rays
33
Anal Spines
3
Anal Rays
8

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
39.00/100
Moderate vulnerability
Trophic Level
2.8
Omnivore / Planktivore
Climate Zone
Subtropical
Described By
Burridge, 2004

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