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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Cook's cardinalfish

Ostorhinchus cookii Macleay, 1881
Max Length
10 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
1–10 m
Climate
Tropical
Resilience
High
Vulnerability
14.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Found close to ledges of rocky areas or coral reefs during the day . Subtidal zone to depths of about 10 m . Nocturnal species . Solitary or in small groups (Ref 90102).

Scientific Name
Ostorhinchus cookii
Authority
Macleay, 1881
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
10 cm
Depth Range
1–10 m
Trophic Level
3.5
Resilience
High
Vulnerability
14.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 7; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8. Distinguished by having the following characteristics: Dorsal-fin rays VII-I, 9; anal-fin rays II, 8; pectoral-fin rays 14; pelvic-fin rays I,5; pored lateral line scales 24; predorsal scales 3-4; circumpeduncular scales 12; total gill rakers 18-20, developed rakers 12-13 . Whitish with 5-6 stripes (dark brown to yellowish), the stripe originating at the upper rear corner of eye incomplete; midlateral stripe ending in a distinct black spot at caudal fin base . Further characterized by presence of dark spot at middle of caudal fin base merged with midlateral stripe; greatest depth of body 2.5-2.8 in SL .: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Cook's 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 1 - 10 m . Tropical south to Natal and east to the western Pacific where it ranges from Japan to the Great Barrier Reef and New Caledonia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.5±0.4
🌙 Nocturnal 🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.01413 × L3.08 (TL)
Max TL
10cm
Dorsal Spines
7
Dorsal Rays
9
Anal Spines
2
Anal Rays
8

🌡️ 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
14.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Macleay, 1881

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Amia robusta Smith & Radcliffe 1911 Synonym
Apogon cookie Macleay 1881 Synonym
Apogon cookii Macleay 1881 Synonym
Apogon melanotaenia Regan 1905 Synonym
Apogon robustus Smith & Radcliffe 1911 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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