New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine Data Deficient 🐠 Aquarium 🌡️ Tropical

Baldhead siltgoby

Amblygobius calvatus Allen & Erdmann, 2016
Max Length
3.3 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
10–20 m
Climate
Tropical
Resilience
High
Vulnerability
12.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Occurs on silt-mud substratum in highly sheltered bays and lagoons; loosely scattered, mainly solitary individuals were encountered at the type locality; invariably associated with muddy burrows where they retreat when closely approached by divers .

Scientific Name
Amblygobius calvatus
Authority
Allen & Erdmann, 2016
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
DD
Max Length
3.3 cm
Depth Range
10–20 m
Trophic Level
3
Resilience
High
Vulnerability
12.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 14 - 15; Anal spines: 15 - 16; Vertebrae: 26. This species is distinguished by the following characters: D VI + I,14-15; A I,15-16; caudal fin is strongly lanceolate, and is longer than head length; longitudinal scales 80-86; transverse scales 24-26; body scales entirely cycloid; scaleless on head, including side of nape and upper opercle; when alive grayish-brown with 2 orange-brown stripes on head and body, short upper stripe, ending before soft dorsal fin, the lower stripe horizontally ovate, orange-brown spot on opercle, continuing as a pale body stripe from upper pectoral-fin base to middle of caudal-fin base; pectoral-fin base pale with small, rectangular dark orange-brown spot across middle portion; series of 8-11 small black spots or saddles on upper back .: elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Baldhead siltgoby 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; reef-associated; depth range 10 - 20 m . Tropical East Indian region and western Pacific.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3±0.2
🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
3.3cm
Dorsal Spines
7
Dorsal Rays
15
Anal Spines
16
Vertebrae
26

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
12.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Allen & Erdmann, 2016

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Baldhead siltgoby ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.