New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Crown-of-thorns cardinalfish

Siphamia fuscolineata Lachner, 1953
Max Length
4 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
7–27 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

A rare species found in lagoons, among the spines of Acanthaster planci, in groups of up to 31 from depths of 7 m or more . Minimum depth taken from Ref. 57178.

Scientific Name
Siphamia fuscolineata
Authority
Lachner, 1953
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
4 cm
Depth Range
7–27 m
Latitude
6°S – 24°N
Trophic Level
3.3
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Apogoniformes
Apogoniformes
Family
Apogonidae
Apogonidae
Genus
Siphamia
Siphamia
Species
Crown-of-thorns cardinalfish
Siphamia fuscolineata

🐟 Physical Description

Dorsal spines (total): 8; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8. Plain dark brown to black, showing a lined pattern on occasion, and usually when caught or as juveniles. Black lines slightly broader in width to pale interspaces. Sometimes confused with the striped form of Siphamia tubifer or S. versicolor, that has narrower black lines .: short and / or deep.

🌀 Behaviour

Behavioural data for Crown-of-thorns 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

Distinct pairing during courtship and spawning .

🌍 Habitat & Distribution

Marine; reef-associated; depth range 7 - 27 m . Tropical; 24°N - 6°S south Taiwan, and the Marshall Islands.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.3±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.01479 × L3.06 (TL)
Max TL
4cm
Dorsal Spines
8
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
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Latitude Range
24°N – 6°S
Described By
Lachner, 1953

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Brown-striped Siphonfish · Crown-of-thorns Cardinalfish · Philippines Urchin Cardinalfish
🌍CES parmovec vzácný
🇵🇹Portuguese Cardeal-da-coroa-de-espinhos
🇨🇳Chinese 大目側仔 · 大面側仔 · 棕線管天竺鯛 · 棕線管竺鯛

🦠 Common Diseases

The following diseases are known to affect Crown-of-thorns cardinalfish.

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Crown-of-thorns cardinalfish ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.