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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Trench-head pygmygoby

Trimma winterbottomi Randall & Downing, 1994
Max Length
3 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
5–21 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Trench-head pygmygoby (Trimma winterbottomi), first described by Randall & Downing, 1994 is a tiny fish in the family Gobiidae (order Gobiiformes). Adults typically reach 3.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 5 to 21 metres. It occurs in Tropical waters. On the IUCN Red List, it is classified as Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Gobiidae kept in the hobby.

Scientific Name
Trimma winterbottomi
Authority
Randall & Downing, 1994
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
3 cm
Depth Range
5–21 m
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 10 - 11; Anal spines: 1; Anal soft rays: 9 - 10. Diagnosis: This species has a frontal ridge behind the orbits that slopes steeply into a wide interorbital trench anteromedially, and into postorbital trenches laterally ; posterior nasal opening adnate to eye; no elongate dorsal spines; second dorsal with 10 or more elements; fifth pectoral ray with two sequential branches (occasionally one dichotomous branch); 18 or more pectoral rays; no scales on head; body color orange-red with four white bars on dorsum, and light orange blotches on white colored head and nape; dark triangular group of melanophores above opercle . : fusiform / normal.

🌀 Behaviour

Behavioural data for Trench-head 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 5 - 21 m . Tropical Indian Ocean: Saudi Arabia to western Thailand.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated

📐 Morphometrics

Length–Weight Relationship: W = 0.01023 × L3.01 (TL)
Max TL
3cm
Dorsal Spines
7
Dorsal Rays
11
Anal Spines
1
Anal Rays
10

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Randall & Downing, 1994

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