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🌊 Marine Least Concern ⚠️ Venomous ⚡ Venomous 🌡️ Subtropical

Whiteblotched scorpionfish

Scorpaenopsis lactomaculata Herre, 1945
Max Length
28 cm
Max Weight
-
Lifespan
-
Trophic Level
4.2
Depth
-
Climate
Subtropical
Resilience
Medium
Vulnerability
38.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Whiteblotched scorpionfish (Scorpaenopsis lactomaculata), first described by Herre, 1945 is a medium-sized fish in the family Scorpaenidae (order Perciformes). Adults typically reach 28.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Subtropical waters. Diet is predominantly piscivorous, targeting other fish and larger prey. On the IUCN Red List, it is classified as Least Concern.The species is venomous and potentially dangerous to handle.

Scientific Name
Scorpaenopsis lactomaculata
Authority
Herre, 1945
Habitat
Marine
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
28 cm
Trophic Level
4.2
Resilience
Medium
Vulnerability
38.00/100
Salinity
30–40 ppt

🐟 Physical Description

Fourth or fifth dorsal spine usually longest (2.05-2.5) in head; occipital pit absent or very shallow; snout very long (2.7-3.0 in head length); space between opercular spines naked; first dorsal spine short (1.8-2.5) in length of second spine; supraocular and postocular spines broadly joined in adults (only tip of supraocular spine showing) and flaring outward to form a shelf over posterior half of eye (Ref 42181).: fusiform / normal.

🌀 Behaviour

Behavioural data for Whiteblotched scorpionfish is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; demersal. Subtropical Indian Ocean.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4.2±0.8

📐 Morphometrics

Length–Weight Relationship: W = 0.01288 × L3.02 (TL)
Max TL
28cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
38.00/100
Moderate vulnerability
Trophic Level
4.2
Apex / Top predator
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Herre, 1945

⚠️ Venom Profile

Medical Warning: This species is venomous. Seek immediate medical attention if envenomated. Contact emergency services and follow first aid guidance below.
Venom Type
proteinaceous neurotoxin
Delivery
dorsal, anal, and pelvic fin spines
Potency
Severe
Mortality Risk
Low
Symptom Onset
5min
Duration
24.0hrs
Antivenom
✗ Not Available
Named Toxins
high-molecular-weight protein (Stonustoxin analogue) acetylcholine
Symptoms
  • immediate intense pain
  • swelling
  • erythema
  • occasional nausea and weakness
Affected Body Systems
peripheral nervous system cardiovascular
First Aid
Immerse affected area in hot water (45 C, tolerable) for 30-90 minutes to denature toxin. Do not apply ice.
Medical Treatment

Analgesia; wound care; tetanus prophylaxis; severe cases may require monitoring for systemic effects.

References: Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature

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