Home · Apogonidae · Cryptic cardinalfish
Cryptic cardinalfish (Apogon coccineus) — Apogonidae

Cryptic cardinalfish

Apogon coccineus
Family: Apogonidae
LC · Least Concern

The Cryptic cardinalfish (Apogon coccineus) is a saltwater fish of the family Apogonidae that grows up to 6 cm.

Length
6 cm
Water
Saltwater
Depth
8.0–35.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Harmless
Edibility
Not eaten

Description

The ruby cardinalfish is a small reef fish of the cardinalfish family (Apogonidae) from the Indo-Pacific. The species grows to about 6 cm and has a uniformly reddish (ruby-red) body with large eyes, adapted to a nocturnal way of life. It occurs on sheltered reef flats, lagoon and seaward reefs to at least 17 metres and hides by day deep in crevices and under stones. At night it hunts small zooplankton and small invertebrates. Like other cardinalfishes the male broods the eggs in its mouth. The species is harmless to humans.

Frequently asked questions

How do you recognise the Cryptic cardinalfish?

The Cryptic cardinalfish has a torpedo-shaped body, is mainly red-orange and shows a plain pattern.

Where does the Cryptic cardinalfish live?

The Cryptic cardinalfish lives in the sea (marine waters) and is mostly found around stony or rocky ground.

How big does the Cryptic cardinalfish get?

The Cryptic cardinalfish grows to a maximum of about 6 cm.

Is the Cryptic cardinalfish dangerous to humans?

No, the Cryptic cardinalfish is harmless to humans.

Is the Cryptic cardinalfish edible?

The Cryptic cardinalfish is not usually eaten.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Robijn-kardinaalbaars sourced
English name
Cryptic cardinalfish verified
Scientific name
Apogon coccineus
Family
Apogonidae
Other names
Cryptic cardinalfish; Red cardinal; Ruby cardinal; Ruby cardinalfish verified

Appearance

Size class
Small verified
Max length (cm)
6.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Red / orange inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
8.0 verified
Max depth (m)
35.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Solitary inferred
Territorial
No inferred
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Not eaten sourced
Fishing method
Geen doelsoort voor de hengelsport; hooguit incidentele vangst of bruikbaar als aasvisje. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Apogon

More from the family Apogonidae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →