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🌊 Marine Data Deficient 🐠 Aquarium 🌡️ Tropical

Crescent dwarfgoby

Eviota bilunula Greenfield & Suzuki, 2016
Max Length
1.1 cm
Max Weight
-
Lifespan
-
Trophic Level
2.9
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Crescent dwarfgoby (Eviota bilunula), first described by Greenfield & Suzuki, 2016 is a tiny fish in the family Gobiidae (order Gobiiformes). Adults typically reach 1.10 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. 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
Eviota bilunula
Authority
Greenfield & Suzuki, 2016
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
DD
Max Length
1.1 cm
Trophic Level
2.9
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. This species is distinguished by the following characters: cephalic sensory-canal pore system missing only IT pore (pattern 2); dorsal/anal fin-ray formula 7/7 or 8/7; unbranched pectoral-fin rays; 5th pelvic-fin ray 15.9-16.4% of 4th ray; presence of a narrow dark bar at caudal-fin base; with a red line extending down from under eye to jaws; there are 5 postanal ventral-midline spots associated with subcutaneous bars; 2 distinctive black crescent-shaped marks present underneath the pectoral fin .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Crescent dwarfgoby 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 ? - 14 m . Tropical Central Pacific: Fiji.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
2.9±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00692 × L3.09 (TL)
Max TL
1.1cm
Dorsal Spines
7
Dorsal Rays
8
Anal Spines
1
Anal Rays
7

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
2.9
Omnivore / Planktivore
Body Shape
Elongated
Climate Zone
Tropical
Described By
Greenfield & Suzuki, 2016

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