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Diadromous Least Concern 🌡️ Tropical

Sleepy goby

Psammogobius biocellatus Valenciennes, 1837
Max Length
19.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
0–3 m
Climate
Tropical
Resilience
Medium
Vulnerability
29.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Inhabits intertidal areas, estuaries, lagoons and coastal rivers. Common in mangroves . Occasionally penetrates the lower reaches of freshwater streams .

Scientific Name
Psammogobius biocellatus
Authority
Valenciennes, 1837
Habitat
Diadromous
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
19.8 cm
Depth Range
0–3 m
Trophic Level
3.5
Resilience
Medium
Vulnerability
29.00/100
Migration
Amphidromous
Water Temp
22–28 °C
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 1; Anal soft rays: 8. Body dark brown to black, with longitudinal rows of small black spot; 2-3 saddles on back and side; black 1st dorsal fin; dark crossbands on pelvic fins .: fusiform / normal.

🌀 Behaviour

Behavioural data for Sleepy goby is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Marine; freshwater; brackish; benthopelagic; amphidromous ; depth range 0 - 3 m . Tropical; 22°C - 28°C south to East London, South Africa (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish
Migration
Amphidromous
Trophic Level
3.5±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01072 × L3.03 (TL)
Max TL
19.8cm
Dorsal Spines
7
Dorsal Rays
9
Anal Spines
1
Anal Rays
8

🌡️ Water Parameters & Tolerance

Temperature Range
22–28°C
Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2016

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Valenciennes, 1837

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 19 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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