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🌊 Marine Least Concern 🌡️ Tropical

Rainford's dartfish

Parioglossus rainfordi McCulloch, 1921
Max Length
4.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
0–5 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Rainford's dartfish (Parioglossus rainfordi), first described by McCulloch, 1921 is a tiny fish in the family Microdesmidae (order Gobiiformes). Adults typically reach 4.50 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 0 to 5 metres. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. The species schools in loose to tight aggregations. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Parioglossus rainfordi
Authority
McCulloch, 1921
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
4.5 cm
Depth Range
0–5 m
Latitude
28°S – 25°N
Trophic Level
3.2
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 5 - 7; Dorsal soft rays (total): 14 - 17; Anal spines: 1; Anal soft rays: 14 - 16. : elongated.

🌀 Behaviour

Behavioural data for Rainford's dartfish 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; brackish; reef-associated; depth range 0 - 5 m . Tropical; 25°N - 28°S north to Yaeyama Islands, south to Queensland, Australia; including Palau and Pohnpei (Caroline Islands) in Micronesia and New Caledonia (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish 🪸 Reef Associated
Trophic Level
3.2±0.4
🐠 Schooling

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
4.5cm
Dorsal Spines
6
Dorsal Rays
16
Anal Spines
1
Anal Rays
15

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2023

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Elongated
Climate Zone
Tropical
Latitude Range
25°N – 28°S
Described By
McCulloch, 1921

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