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🌊 Marine Least Concern 🌡️ Tropical

Larson' tiny sandgoby

Grallenia larsonae Allen & Hammer, 2018
Max Length
18 cm
Max Weight
Lifespan
Trophic Level
3.5
Depth
1–15 m
Climate
Tropical
Resilience
Medium
Vulnerability
34.00/100
Typical Length
Depth Zone
demersal

📖 Overview

Specimens were collected using rotenone on sand and rubble bottoms, in habitats ranging from sand flats, isolated coral knolls, reef slopes, and reef edge/fringing reef with scattered corals .

Scientific Name
Grallenia larsonae
Authority
Allen & Hammer, 2018
Habitat
Marine
Climate
Tropical
IUCN Status
LC
Max Length
18 cm
Depth Range
1–15 m
Trophic Level
3.5
Resilience
Medium
Vulnerability
34.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Grallenia
Grallenia
Species
Larson' tiny sandgoby
Grallenia larsonae

🐟 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 set of characters: D VI+I,6–7; A I,6–8; first dorsal-fin spine not produced into filament; pelvic frenum present; cephalic sensory canals and associated pores present; 22–30 longitudinal scales. Coloration in alcohol is tan with 8 widely spaced, small, brown spots in mid-lateral row on side of the body; faint dark bar of stellate melanophores across anterior cheek; scattered pepper-like melanophores on anterior part of upper opercle It is closely related to Grallenia arenicola from Kashiwa-jima island of southern Japan. This species has relatively fewer scales anterior to the level of the second dorsal fin origin compared with Grallenia arenicola .Cross section: oval.

🌀 Behaviour

Behavioural data for Larson' tiny sandgoby is currently being reviewed.

🦐 Diet

Diet information for Larson' tiny sandgoby is currently being compiled.

🥚 Reproduction

Reproduction data for Larson' tiny sandgoby is currently being compiled.

🌍 Habitat & Distribution

Marine; demersal; depth range 1 - 15 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.5±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
18cm
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
Medium
Minimum doubling time
Fishing Vulnerability
34.00/100
Low vulnerability
Trophic Level
3.5
Predator
Climate Zone
Tropical
Described By
Allen & Hammer, 2018

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