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Diadromous Least Concern 🌡️ Subtropical

Burrowing goby

Croilia mossambica Smith, 1955
Max Length
6.4 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
1–16 m
Climate
Subtropical
Resilience
High
Vulnerability
12.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Lives in burrows excavated in clean sand, often in association with the sandprawn Callianassa kraussi . Restricted to sandy, quiet water areas and is unable to form burrows where the substrate is disturbed by water movements, is muddy or consists of sand with a particle diameter > 0.5 mm . Food consists of slow moving benthic organisms like chironomid larvae, gastropods, bivalves and amphipods . Breeds throughout summer, males are territorial . On exposed shores, they occur deeper than 3.5 m . Occasionally intertidal.

Scientific Name
Croilia mossambica
Authority
Smith, 1955
Habitat
Diadromous
Climate
Subtropical
Body Shape
Elongated
IUCN Status
LC
Max Length
6.4 cm
Depth Range
1–16 m
Trophic Level
3.3
Resilience
High
Vulnerability
12.00/100
Migration
Amphidromous
Salinity
30–40 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Gobiiformes
Gobiiformes
Family
Gobiidae
Gobiidae
Genus
Croilia
Croilia
Species
Burrowing goby
Croilia mossambica

🐟 Physical Description

Dorsal spines (total): 6; Dorsal soft rays (total): 11 - 12; Anal spines: 0; Anal soft rays: 12. : elongated.

🌀 Behaviour

Behavioural data for Burrowing goby is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

Size at Maturity
3cm TL

🌍 Habitat & Distribution

Marine; freshwater; brackish; demersal; amphidromous ; depth range 1 - 16 m . Subtropical; 25°S - 31°S South Africa, and southern Mozambique (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish ⬇️ Benthic
Migration
Amphidromous
Trophic Level
3.3±0.45

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
6.4cm
Dorsal Spines
6
Dorsal Rays
12
Anal Rays
12

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
12.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Smith, 1955

🌐 Names & Taxonomy

Language Common Names
🇬🇧English burrowing goby · Estuarine Burrowing Goby · Naked Burrowing Goby · Naked Goby
🌍AFR Grawende Dikkop
🇷🇺Russian Мозамбикская кроила

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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