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🌊 Marine Least Concern ⚠️ Venomous ⚡ Venomous 🌡️ Subtropical

Thalassophryne Montevidensis

Thalassophryne montevidensis Berg, 1893
Max Length
-
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
28.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Thalassophryne Montevidensis (Thalassophryne montevidensis) is a ray-finned fish of the family Batrachoididae. It inhabits marine (saltwater) waters in benthic environments. With a trophic level of 3.5, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List. Venomous.

Scientific Name
Thalassophryne montevidensis
Authority
Berg, 1893
Habitat
Marine
Climate
Subtropical
Body Shape
Elongated
IUCN Status
LC
Trophic Level
3.5
Resilience
High
Vulnerability
28.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 2; Dorsal soft rays (total): 18 - 19; Anal spines: 0; Anal soft rays: 17 - 18. Large dark colored species with four tan dorsal saddles under the second dorsal fin and with pale distal margins to the second dorsal, anal, pectoral, and caudal fins .: elongated.

🌀 Behaviour

Behavioural data for Thalassophryne Montevidensis 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. Subtropical Southwest Atlantic: southeastern Brazil to Argentina.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.5±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.0049 × L3.15 (TL)
Dorsal Spines
2
Dorsal Rays
19
Anal Rays
18

🌡️ 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
28.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Berg, 1893

⚠️ 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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