New 🐟 2024 Mercury Safety Guide Now Available. Omega-3 Rankings Updated. View Omega-3 Rankings →

🌊 Marine Least Concern 🌡️ Tropical

Blackblotch emperor

Lethrinus semicinctus Valenciennes, 1830
Max Length
35 cm
Max Weight
Lifespan
Trophic Level
4
Depth
4–35 m
Climate
Tropical
Resilience
High
Vulnerability
25.00/100
Typical Length
29 cm
Depth Zone
reef

📖 Overview

Solitary or in groups . Inhabits shallow seagrass beds, reef flats, lagoons, and sandy areas near coral reefs. Feeds on benthic invertebrates and small fish. Also caught with beach seines and handlines and is marketed fresh .

Scientific Name
Lethrinus semicinctus
Authority
Valenciennes, 1830
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
35 cm
Depth Range
4–35 m
Latitude
21°S – 30°N
Trophic Level
4
Resilience
High
Vulnerability
25.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 10; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 8. Body is brown or tan, with scattered irregular small black blotches, a large oblong black blotch below soft-rayed portion of dorsal fin and bordering below the lateral line. The fins are pale or pinkish.: fusiform / normal; Cross section: oval.

🌀 Behaviour

Behavioural data for Blackblotch emperor is currently being reviewed.

🦐 Diet

Diet information for Blackblotch emperor is currently being compiled.

🥚 Reproduction

Reproduction data for Blackblotch emperor is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; non-migratory; depth range 4 - 35 m . Tropical; 30°N - 21°S West Pacific: Sri Lanka to the Marshall and Solomon islands, north to the Ryukyu Islands, south to northern Australia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Migration
Non-migratory
Trophic Level
4±0.64
🧍 Solitary
Food Items

benthic invertebrates and small fish

📐 Morphometrics

Length–Weight Relationship: W = 0.01349 × L2.98 (TL)
Max TL
35cm
Dorsal Spines
10
Dorsal Rays
9
Anal Spines
3
Anal Rays
8

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
25.00/100
Low vulnerability
Trophic Level
4
Apex / Top predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Latitude Range
30°N – 21°S
Described By
Valenciennes, 1830

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) — 6 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet — be the first to log one!

View all observations for Blackblotch emperor ↗
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.