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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

New-moon cardinalfish

Rhabdamia novaluna Yoshida, Mabuchi & Motomura, 2018
Max Length
5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
3–32 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

New-moon cardinalfish (Rhabdamia novaluna), first described by Yoshida, Mabuchi & Motomura, 2018 is a small fish in the family Apogonidae (order Apogoniformes). Adults typically reach 5.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 3 to 32 metres. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Apogonidae kept in the hobby.

Scientific Name
Rhabdamia novaluna
Authority
Yoshida, Mabuchi & Motomura, 2018
Habitat
Marine
Climate
Tropical
IUCN Status
LC
Max Length
5 cm
Depth Range
3–32 m
Trophic Level
3.3
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 12; Vertebrae: 24. This species is distinguished by the following set of characters: D VI-I, 9; anal-fin rays II,12; pectoral-fin rays 12-13 (usually 13); developed gill rakers 26-31 (modally 28-29); total gill rakers (including rudiments) 27-31 (28); body depth at second dorsal-fin origin 25.5-33.1% of SL (mean 30.2%). Colouration: with a black stripe from jaw tips to anterior margin of orbit; black pigmentation lining the margin of caudal-fin rays; a subdermal black blotch or spot on the lower caudal peduncle; no reddish-brown to blackish blotches on the opercle and anterior portion of body .Cross section: oval.

🌀 Behaviour

Behavioural data for New-moon cardinalfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner 👄 Mouth Brooder
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; reef-associated; depth range 3 - 32 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01122 × L3.07 (TL)
Max TL
5cm
Dorsal Spines
7
Dorsal Rays
9
Anal Spines
2
Anal Rays
12
Vertebrae
24

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Tropical
Described By
Yoshida, Mabuchi & Motomura, 2018

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