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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Tiny cardinalfish

Ostorhinchus nanus Allen, Kuiter & Randall, 1994
Max Length
6 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
3–20 m
Climate
Tropical
Resilience
High
Vulnerability
11.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Occurs in silty inshore reefs; aggregations observed hovering during the day around both soft and hard coral formations. An oral brooding male collected at Madang, papua New Guinea, contained 328 eggs, which is a relatively low number for the genus .

Scientific Name
Ostorhinchus nanus
Authority
Allen, Kuiter & Randall, 1994
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
6 cm
Depth Range
3–20 m
Trophic Level
3.4
Resilience
High
Vulnerability
11.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8; Vertebrae: 24. This species is distinguished by having D VI-I,9; A II,8; pectoral rays 13; lateral line scales 24; predorsal scales 5; gill rakers 7 or 8+20 or 21, excluding an indistinct rudiment on upper limb; preopercular margin serrate; preopercular ridge smooth; body depth 3.4-3.7 in SL; semi-transparent in life with golden-brown midlateral strip, bordered below by narrow silver stripe; tip of lower jaw blackish .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Tiny cardinalfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

👄 Mouth Brooder

Mouthbrooders . Distinct pairing during courtship and spawning .

🌍 Habitat & Distribution

Marine; reef-associated; depth range 3 - 20 m . Tropical Central Pacific: Madang, Papua New Guinea; Maumere, Indonesia; and, near Kota Kinabalu, Sabah, Malaysia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.4±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00955 × L3.2 (TL)
Max TL
6cm
Dorsal Spines
7
Dorsal Rays
9
Anal Spines
2
Anal Rays
8
Vertebrae
24

🌡️ 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
11.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Allen, Kuiter & Randall, 1994

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Tiny Cardinalfish · Yellow-band Cardinalfish
🌍CES parmovec drobný
🇵🇹Portuguese Cardeal-fada

Scientific Synonyms

Scientific Name Author Year Status
Apogon nanus Allen, Kuiter & Randall 1994 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 4 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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