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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Four-spotted pygmygoby

Trimma quadrimaculatum Hoese, Bogorodsky & Mal, 2015
Max Length
1.6 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
10–16 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Usually found in small groups in small caves in the reef wall of fringing reefs in seaward reefs and bays .

Scientific Name
Trimma quadrimaculatum
Authority
Hoese, Bogorodsky & Mal, 2015
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
1.6 cm
Depth Range
10–16 m
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 8; Anal spines: 1; Anal soft rays: 7; Vertebrae: 27. This species is distinguished by the following characters: D VI + I,8; A I,7; pectoral-fin rays 15-17, with most rays unbranched; scale series - longitudinal 23-25; transverse counted forward 7; median predorsal scales 6-8 (usually 7 or 8), the scales reaching to just behind eye; eyes are slightly elevated resulting in a shallow pit in interorbital area and a shallow groove along dorsoposterior margin of eye; the pectoral-fin base is covered with 2 large cycloid scales (and 1 or 2 smaller scales); prepelvic area covered with about 3-6 rows of cycloid scales; reduced transverse pattern of sensory papilla rows on cheek; nape with 1-2 modified elongate papillae behind each eye; connected pelvic fins form a plate, no interspinal membrane, the fifth ray with 2 dichotomous branches; head and body with broad, irregular, brown bars, the last bar posteriorly on caudal peduncle extending basally onto rays of caudal fin; head with 3 dark brown bars below eye; the basal quarter of second and third membranes of first dorsal fin with diffuse dark blotch; 2 subcutaneous dark brown spots along the anal-fin base, 2 similar spots ventrally on caudal peduncle behind rear base of anal fin .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Four-spotted pygmygoby is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; reef-associated; depth range 10 - 16 m . Tropical Indian Ocean: Red Sea, Saudi Arabia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated

📐 Morphometrics

Length–Weight Relationship: W = 0.01023 × L3.01 (TL)
Max TL
1.6cm
Dorsal Spines
7
Dorsal Rays
8
Anal Spines
1
Anal Rays
7
Vertebrae
27

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2021

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Body Shape
Elongated
Climate Zone
Tropical
Described By
Hoese, Bogorodsky & Mal, 2015

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