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🌊 Marine Least Concern 🌡️ Tropical

Williams’s flapheaded goby

Callogobius williamsi Delventhal & Mooi, 2023
Max Length
3.3 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
7–27 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Williams’s flapheaded goby (Callogobius williamsi) is a ray-finned fish of the family Gobiidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 3.3 cm. It occurs at depths between 7 and 27 metres. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Callogobius williamsi
Authority
Delventhal & Mooi, 2023
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
3.3 cm
Depth Range
7–27 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): 9; Anal spines: 1; Anal soft rays: 6 - 7; Vertebrae: 26. This species is distinguished from its congeners by the following set of characters: most or all scales cycloid; ctenoid scales (if present) restricted to mid-lateral region of caudal peduncle; 23-26 (usually 24 or 25) scales in lateral series; presence of pelvic frenum; absence of preopercular papillae row (Row 20); interorbital canal present with pair of pores B?, single pore D, and pair of pores F? .: elongated.

🌀 Behaviour

Behavioural data for Williams’s flapheaded goby is currently being reviewed.

🦐 Diet

Diet information for Williams’s flapheaded goby is currently being compiled.

🥚 Reproduction

Reproduction data for Williams’s flapheaded goby is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 7 - 27 m . Tropical Central Pacific: Marquesas Is.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
3.3cm
Dorsal Spines
7
Dorsal Rays
9
Anal Spines
1
Anal Rays
7
Vertebrae
26

🌡️ 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
3.1
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Delventhal & Mooi, 2023

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