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🌊 Marine Least Concern 🌡️ Tropical

Bulbnose unicornfish

Naso tonganus Valenciennes, 1835
Max Length
60 cm
Max Weight
-
Lifespan
-
Trophic Level
2
Depth
2–40 m
Climate
Tropical
Resilience
Medium
Vulnerability
52.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Inhabits coral reefs . Feeds on leafy or fleshy algae and zooplankton . Found singly or in small groups .

Scientific Name
Naso tonganus
Authority
Valenciennes, 1835
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
60 cm
Depth Range
2–40 m
Trophic Level
2
Resilience
Medium
Vulnerability
52.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 5; Dorsal soft rays (total): 27 - 30; Anal spines: 2; Anal soft rays: 26 - 28. : fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Bulbnose unicornfish is currently being reviewed.

🦐 Diet

Diet information for Bulbnose unicornfish is currently being compiled.

🥚 Reproduction

Reproduction data for Bulbnose unicornfish is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 2 - 40 m . Tropical Indian Ocean: Mauritius, Seychelles and Mozambique (probably wider distribution in this part of the ocean).

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
2
Food Items

leafy or fleshy algae and zooplankton (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.02692 × L2.96 (TL)
Max TL
60cm
Dorsal Spines
5
Dorsal Rays
29
Anal Spines
2
Anal Rays
27

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2010

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
52.00/100
Moderate-High vulnerability
Trophic Level
2
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Valenciennes, 1835

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