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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Twinspot goby

Signigobius biocellatus Hoese & Allen, 1977
Max Length
10 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
1–30 m
Climate
Tropical
Resilience
High
Vulnerability
24.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Adults occur in sandy to silty bottoms of lagoons and coastal bays near coral, rubble or leaf litter shelter. Solitary or in pairs that share sandy burrows . They feed on small interstitial invertebrates by sifting mouthfuls of sand. Monogamous .

Scientific Name
Signigobius biocellatus
Authority
Hoese & Allen, 1977
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
10 cm
Depth Range
1–30 m
Latitude
24°S – 19°N
Trophic Level
3.5
Resilience
High
Vulnerability
24.00/100
Migration
Non-migratory
Water Temp
22–27 °C
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 10 - 11; Anal spines: 1; Anal soft rays: 10 - 11. Conspicuous ocellated dorsal fins ; characterized by pale bluish grey to yellowish tan; narrow brown bar below eye; upper half of body with irregular brown spot and saddles; three irregular brown bars on lower half of body; narrow brown bar across base of caudal fin; pelvic and anal fins black with blue spots; rounded caudal fin; longitudinal scale series 48-55; mainly ctenoid body scales posteriorly, becoming cycloid anteriorly just behind pectoral base and below first dorsal fin; cycloid on ventral surface of abdomen; head and midline of nape without scales; depth of body 4.3-5.6 in SL .: fusiform / normal.

🌀 Behaviour

Behavioural data for Twinspot 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

Monogamous mating is observed as both obligate and social .

🌍 Habitat & Distribution

Marine; reef-associated; non-migratory ; depth range 1 - 30 m , usually 2 - 30 m . Tropical; 22°C - 27°C ; 19°N - 24°S south to the southern Great Barrier Reef; Palau in Micronesia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Migration
Non-migratory
Trophic Level
3.5±0.37
🧍 Solitary
Food Items

small interstitial invertebrates by sifting mouthfuls of sand

📐 Morphometrics

Length–Weight Relationship: W = 0.01023 × L3.01 (TL)
Max TL
10cm
Dorsal Spines
7
Dorsal Rays
11
Anal Spines
1
Anal Rays
11

🌡️ Water Parameters & Tolerance

Temperature Range
22–27°C
Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
24.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Latitude Range
19°N – 24°S
Described By
Hoese & Allen, 1977

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 12 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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