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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Holleman's pygmygoby

Trimma hollemani Winterbottom, 2016
Max Length
2.8 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
8–70 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Found in caves of reef slopes also with overhangs and crevices; in areas with sand, some rubble and gorgonians, small, hard and soft corals, Tubastrea, sea whips, some black coral, sea fans, tunicates, sponges, some hydroids .

Scientific Name
Trimma hollemani
Authority
Winterbottom, 2016
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
2.8 cm
Depth Range
8–70 m
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 7 - 8; Anal spines: 1; Anal soft rays: 7 - 8. This species is distinguished by the following characters: a bony interorbital 82-100% pupil diameter; usually 11 ctenoid scales in predorsal midline; second dorsal spine may reach to the base of the third dorsal fin ray (in mature males) or anterior to this point; usually five free neuromasts (sensory papillae) in row r on the top of the snout, pectoral-fin rays usually 14-15 with 1-4 branched rays in about half the individuals; an unbranched fifth pelvic-fin ray that is 47-64% the length of the fourth ray. Colour of freshly collected specimens: a red to yellow background colour, a light stripe along the mid-lateral body that continues forward over the top of the pupil ending posteriorly at a pale bar across the peduncle in front of the dark caudal blotch; a light stripe below the eye bordered dorsally by a narrow red stripe (both light stripes blue in life). In preserved specimens, the central dark stripe on the snout (blue in life) is usually made up of amorphous brown chromatophores, often with a few scattered rounded very dark chromatophores, a dark blotch made up of rounded brown chromatophores on chin just behind the symphysis, and at least some dark chromatophores on the lower lip .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Holleman's 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; pelagic-neritic; depth range 8 - 70 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic

📐 Morphometrics

Length–Weight Relationship: W = 0.00741 × L3.09 (TL)
Max TL
2.8cm
Dorsal Spines
7
Dorsal Rays
8
Anal Spines
1
Anal Rays
8

🌡️ 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, 2016

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