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🌊 Marine Least Concern ⚠️ Venomous 🐠 Aquarium ⚡ Venomous 🌡️ Subtropical

Roundbelly cowfish

Lactoria diaphana Bloch & Schneider, 1801
Max Length
34 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
8–50 m
Climate
Subtropical
Resilience
High
Vulnerability
18.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Inhabit coral and rocky reefs of coastal areas . Also common on offshore sand and mudflats . Young fish occur in oceanic waters, at or near the surface ; semi-transparent young may enter estuaries . Benthopelagic . Feed on benthic invertebrates . A large number of juveniles were found in the stomachs of flatheads .

Scientific Name
Lactoria diaphana
Authority
Bloch & Schneider, 1801
Habitat
Marine
Climate
Subtropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
34 cm
Depth Range
8–50 m
Latitude
28°S – 35°N
Trophic Level
3.3
Resilience
High
Vulnerability
18.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 9; Anal spines: 0; Anal soft rays: 9. Small spine on back and short spines before eyes . Caudal fin rays 10 . : short and / or deep.

🌀 Behaviour

Behavioural data for Roundbelly cowfish 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; brackish; reef-associated; depth range 8 - 50 m . Subtropical; 35°N - 28°S Southeast Atlantic: off Swakopmund, Namibia (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish 🪸 Reef Associated
Trophic Level
3.3
Food Items

benthic invertebrates (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.03715 × L2.8 (TL)
Max TL
34cm
Dorsal Rays
9
Anal Rays
9

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
18.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Short and / or deep
Climate Zone
Subtropical
Latitude Range
35°N – 28°S
Described By
Bloch & Schneider, 1801

⚠️ 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

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Many-spined Cowfish · roundbelly cowfish · Spiny Boxfish · Spiny Cowfish · Transparent Boxfish
🇯🇵Japanese Umisuzume · ウミスズメ
🇷🇺Russian Круглобрюхая лактория · многошипый рогатый кузовок
🇪🇸Spanish cofre espinoso

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 45 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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View all observations for Roundbelly cowfish ↗
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