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🌊 Marine Least Concern 🌡️ Tropical

Mistaken pygmygoby

Trimma hamartium Winterbottom, 2018
Max Length
2.5 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
7–50 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Found in areas with heavy cover of hard corals (Acropora, Pocillopora, Millepora, plate corals, lettuce corals star and cactus corals), variety of sponges, sea whips, ascidians, alcyonarians, tunicates, hydoids (in caves), soft corals, gorgonians, brown encrusting algae; and also on steep reef slopes and almost vertical walls with several large caves with sand/rubble floors, undercuts and small platforms .

Scientific Name
Trimma hamartium
Authority
Winterbottom, 2018
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
2.5 cm
Depth Range
7–50 m
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: 8 - 9. This species is distinguished by the following characters: no scales on the cheeks and opercle; 8-9 scales in predorsal midline; short second dorsal spine reaching to a mean of the base of the first ray of the second dorsal fin when abducted; pectoral-fin rays 17-19 with 5-10 branched rays in the middle of the fin; an unbranched 5th pelvic-fin ray, 51-64% the length of 4th ray; total gill rakers 17-19; papillae in row c 6, below the eye; U-shaped bony interorbital with a narrow slit-like postorbital trench which ends at the posteriormost papilla in row p; colour when freshly collected, a reddish head with 3-4 yellow bars on the cheek, red iris with four yellow spots, yellow body which is lighter posteriorly, scales pockets outlined with melanophores and scale rows above and below midlateral row much lighter posterior to second dorsal fin origin (giving appearance of three yellow stripes on body); colour when preserved with fairly evenly distributed melanophores over the dorsal surface of the snout .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Mistaken pygmygoby is currently being reviewed.

🦐 Diet

Diet information for Mistaken pygmygoby is currently being compiled.

🥚 Reproduction

Reproduction data for Mistaken pygmygoby is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 7 - 50 m . Tropical southwest Palau and probably true for Fiji (paratypes of T.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
2.5cm
Dorsal Spines
7
Dorsal Rays
9
Anal Spines
1
Anal Rays
9

🌡️ 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
Winterbottom, 2018

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