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🌊 Marine Data Deficient 🌡️ Tropical

Dark-finned sand goby

Microgobius urraca Tornabene, van Tassell & Robertson, 2012
Max Length
6.9 cm
Max Weight
Lifespan
Trophic Level
3.3
Depth
12–20 m
Climate
Tropical
Resilience
High
Vulnerability
15.00/100
Typical Length
Depth Zone
pelagic

📖 Overview

Found over sand or sand and leaf litter bottoms; where collections are found in the latter, this species was collected with several specimens of Ptereleotris carinata and M. erectus. Presumed to be a burrowing species .

Scientific Name
Microgobius urraca
Authority
Tornabene, van Tassell & Robertson, 2012
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
DD
Max Length
6.9 cm
Depth Range
12–20 m
Trophic Level
3.3
Resilience
High
Vulnerability
15.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 8; Dorsal soft rays (total): 14; Anal spines: 1; Anal soft rays: 14; Vertebrae: 27. This species is distinguished from Microgobius urraca in having the following characters: lateral scale rows 67-76; patch of ctenoid scales under the pectoral fin absent; unpigmented epaxial myosepta; first dorsal fin with a distinct oval-shaped dark blotch; three blue-white stripes on a dark caudal fin. It differs from the remaining eastern Pacific congeners in the number and type of scales (pectoral- and pelvic fin base without scales; pre-anal region with small embedded cycloid scales; small scales on anterior and ventral portions of trunk, partially imbedded, and in irregular rows, becoming larger and arranged in distinct rows dorsally and posteriorly; no small patch of ctenoid scales beneath pectoral fin); D1 VII, D2 I,14; A I,14; fleshy dorsal crest poorly developed and overall color pattern .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Dark-finned sand goby is currently being reviewed.

🦐 Diet

Diet information for Dark-finned sand goby is currently being compiled.

🥚 Reproduction

Reproduction data for Dark-finned sand goby is currently being compiled.

🌍 Habitat & Distribution

Marine; pelagic-neritic; depth range 12 - 20 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic
Trophic Level
3.3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
6.9cm
Dorsal Spines
8
Dorsal Rays
14
Anal Spines
1
Anal Rays
14
Vertebrae
27

🌡️ 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
15.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Tornabene, van Tassell & Robertson, 2012

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