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🌊 Marine Least Concern ⚠️ Venomous ⚡ Traumatogenic 🌡️ Tropical

Thomas sea catfish

Notarius grandicassis Valenciennes, 1840
Max Length
63 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
1–20 m
Climate
Tropical
Resilience
Medium
Vulnerability
40.00/100
Typical Length
40 cm
Depth Zone
demersal

📖 Overview

Found on muddy bottoms of shallow brackish waters; also in marine waters. Reproduction seems to occur between May and June. The female lays down 20-30 eggs having a diameter of 10-12 mm, agglutinated in mucus. The male guards the eggs for 10-12 days until hatching . Marketed fresh.

Scientific Name
Notarius grandicassis
Authority
Valenciennes, 1840
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
63 cm
Depth Range
1–20 m
Latitude
23°S – 12°N
Trophic Level
3.5
Resilience
Medium
Vulnerability
40.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Siluriformes
Siluriformes
Family
Ariidae
Ariidae
Genus
Notarius
Notarius
Species
Thomas sea catfish
Notarius grandicassis

🐟 Physical Description

Dorsal spines (total): 1. Three pairs of barbels on rostral region, two pairs on lower jaw, one pair on posterior end of maxilla; end of maxilla barbel reaching insertion of pectoral fin; body yellow-brown, whitish ventrally; each fin membrane blackish distally .: elongated.

🌀 Behaviour

Behavioural data for Thomas sea catfish is currently being reviewed.

🦐 Diet

Diet information for Thomas sea catfish is currently being compiled.

🥚 Reproduction

Reproduction data for Thomas sea catfish is currently being compiled.

🌍 Habitat & Distribution

Marine; brackish; demersal; depth range 1 - 20 m . Tropical; 12°N - 23°S, 77°W - 34°W South America: Rivers and estuaries from Gulf of Venezuela to mouth of the Amazon River.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Trophic Level
3.5±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00631 × L3.14 (TL)
Max TL
63cm
Dorsal Spines
1

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
40.00/100
Moderate vulnerability
Trophic Level
3.5
Predator
Body Shape
Elongated
Climate Zone
Tropical
Latitude Range
12°N – 23°S
Described By
Valenciennes, 1840

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Thomas sea catfish
🌍CES notarius guyanský
🇫🇷French Mâchoiron grondé
🇵🇹Portuguese Bagre branco · Cambeua
🇷🇺Russian Большеголовый нотариус

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 79 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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