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🌊 Marine Data Deficient 🐠 Aquarium 🌡️ Tropical

Step-spot pygmygoby

Trimma xanthochrum Winterbottom, 2011
Max Length
2.5 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
12–70 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Step-spot pygmygoby (Trimma xanthochrum), first described by Winterbottom, 2011 is a tiny fish in the family Gobiidae (order Gobiiformes). Adults typically reach 2.50 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 12 to 70 metres. It occurs in Tropical waters. On the IUCN Red List, it is classified as Data Deficient.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Gobiidae kept in the hobby.

Scientific Name
Trimma xanthochrum
Authority
Winterbottom, 2011
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
DD
Max Length
2.5 cm
Depth Range
12–70 m
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: 8. This species is characterized by the following: a wide interorbital region (80-100% pupil diameter); the second dorsal spine usually reaching posteriorly to between the bases of the second to third dorsal fin rays; pectoral rays 15-16, usually with 7-8 branched rays; vertical rows of sensory papillae below eye of 2-3 papillae in rows 1-4 and 4-5 in row 5; caudal blotch which has a lower half about two-thirds the width of the upper half; usually an overall yellowish body with yellow at least proximally in the caudal fin .: fusiform / normal; Cross section: circular.

🌀 Behaviour

Behavioural data for Step-spot 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; demersal; depth range 12 - 70 m . Tropical Pacific Ocean: Indonesia.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic

📐 Morphometrics

Length–Weight Relationship: W = 0.01023 × L3.01 (TL)
Max TL
2.5cm
Dorsal Spines
7
Dorsal Rays
8
Anal Spines
1
Anal Rays
8

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2021

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Winterbottom, 2011

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