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🌊 Marine Least Concern 🌡️ Tropical

Lau goby

Grallenia lauensis Allen & Erdmann, 2017
Max Length
1.6 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
30–35 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Inhabits area of extensive gradual slopes of clean white sand (in 30-35 m depth). Collected from sites located in channel passes from the outer reef to extensive inner lagoons, and were hence subject to frequent strong currents and high rates of water exchange .

Scientific Name
Grallenia lauensis
Authority
Allen & Erdmann, 2017
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
1.6 cm
Depth Range
30–35 m
Trophic Level
3
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Grallenia
Grallenia
Species
Lau goby
Grallenia lauensis

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 7; Anal spines: 1; Anal soft rays: 7; Vertebrae: 27. This species is distinguished by the following characters: D VI + I,7; A I,7; all segmented dorsal- and anal-fin rays are unbranched; pectoral-fin rays 15, all rays unbranched except the middle 2-4; posterior longitudinal scales 8-12, mainly restricted to caudal peduncle; no scales on anterior body; body depth at pelvic-fin origin 15.1-15.7% SL; depth at anal-fin origin 12.9-13.2% SL; with cephalic sensory-canal pores; live colour of female mainly translucent with faint markings, including 5, progressively shorter, orange-brown, dash-like marks overlying vertebral column, about 10-12 narrow orange bars on the back between level of pectoral-fin base and caudal-fin base, and 5-6 widely-spaced, brown-to-orange spots on lower side between middle of abdomen and caudal-fin base; male colour unknown .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Lau goby is currently being reviewed.

🦐 Diet

Diet information for Lau goby is currently being compiled.

🥚 Reproduction

Reproduction data for Lau goby is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 30 - 35 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
1.6cm
Dorsal Spines
7
Dorsal Rays
7
Anal Spines
1
Anal Rays
7
Vertebrae
27

🌡️ 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
10.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Allen & Erdmann, 2017

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