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

🌊 Marine Data Deficient 🐠 Aquarium 🌡️ Tropical

Alotau goby

Acentrogobius violarisi Allen, 2015
Max Length
3 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
15–18 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

The collection area consists of moderately sloped (about 20 degrees) mud substratum (the slope begins in approximately 1.5 m depth and flattens out at about 18 m). The featureless bottom has numerous burrows occupied by a variety of fishes and invertebrates, including this new species. Fewer than ten individuals were observed on the lower section of the slope (15-18 m ) and only widely scattered, solitary individuals were seen, each of which was invariably associated with a muddy burrow .

Scientific Name
Acentrogobius violarisi
Authority
Allen, 2015
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
DD
Max Length
3 cm
Depth Range
15–18 m
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 11; Anal spines: 1; Anal soft rays: 11. This species is distinguished by the following characters: D VI + I,11, the dorsal spines are thin and flexible, first longest with filamentous tip, 3.2 in SL, reaching to base of about fourth or fifth soft ray of second dorsal fin when laid back; A I,11; pectoral-fin rays 16-18; lanceolate caudal fin, longer than head length; 28-29 scales in longitudinal series; 8 transverse scales; 12-13 predorsal-scales; ctenoid scales cover the body, becoming cycloid on the breast, pectoral-fin base, and nape; cheek and opercle naked; when alive colour pale grey with brown scribbling on the back, with mid-lateral row of 4 short narrow black bars and spot (at caudal-fin base) positioned between pair of brown stripes extending from pectoral fin to caudal-fin base, pair of neon blue stripes across cheek, alternating blue and brown bands on dorsal fins, and orange spots on upper half of caudal fin .: elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Alotau goby 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; depth range 15 - 18 m . Tropical East Indian region.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.1±0.4
🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.00794 × L3.09 (TL)
Max TL
3cm
Dorsal Spines
7
Dorsal Rays
11
Anal Spines
1
Anal Rays
11

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Allen, 2015

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Alotau goby ↗
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.