Amboina Cardinalfish
Fibramia amboinensis
Also known as Apogon amboinensis, Ambon Cardinalfish
Care at a glance
- Temperature
- 72–79°F (22–26°C)
- pH
- 8.1–8.4
- Adult size
- 3.5 in (9 cm)
- Minimum tank
- 50 gal (190 L)
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Middle
- Difficulty
- Easy
- Breeding
- Hard
- Rarity
- Very rare
- Reef safe
- Reef safe
- Origin
- Indo-West Pacific (East Africa to the Solomon Islands)
- Family
- Apogonidae
Overview
A peaceful, social cardinalfish that does best in a group of three or more alongside calm tankmates. Captive-bred fish are hardy and take pellets and frozen foods without fuss. Adults may eat very small shrimp and fish, so choose the tiniest tankmates with care.
In the wild
The Amboina cardinalfish is an inshore specialist that lives around mangrove roots, river mouths and quiet estuaries across the Indo-West Pacific, and it even follows the tide into fresh water. In the aquarium it settles happily into normal reef conditions with caves, overhangs and shaded structure to hold near. A tank of 190 liters or more suits a small group.
Good to know
Fibramia amboinensis was described as Apogon amboinensis in 1854 and moved to the newer genus Fibramia in 2014. It reaches about 9 cm and carries a dark stripe through each eye from the snout to the gill cover. The male is a mouthbrooder, and one brooding fish was found carrying roughly 3,000 eggs.
Did you know
This is one of the few cardinalfish in the hobby that routinely leaves full seawater in the wild, moving between mangroves, brackish river mouths and even fresh water as the tide changes.
Tank mates
Amboina Cardinalfish is a peaceful, social species that keeps to the middle. These picks match on water type, temperature, pH, size and temperament.

Carpenter's flasher wrasse
Paracheilinus carpenteriSaltwater3.1 in (8 cm)53 gal (200 L)73–81°F (23–27°C)
McCosker's Flasher Wrasse
Paracheilinus mccoskeriSaltwater3.1 in (8 cm)55 gal (208 L)72–79°F (22–26°C)
Blue Chromis
Chromis cyaneaSaltwater5.1 in (13 cm)53 gal (200 L)73–81°F (23–27°C)
Vermiculated Angelfish
Chaetodontoplus mesoleucusSaltwater7.1 in (18 cm)66 gal (250 L)75–81°F (24–27°C)
Bartlett's Anthias
Pseudanthias bartlettorumSaltwater3.5 in (9 cm)70 gal (265 L)72–79°F (22–26°C)
Sunburst Anthias
Serranocirrhitus latusSaltwater5.1 in (13 cm)70 gal (265 L)72–81°F (22–27°C)
Common questions
What size tank does an Amboina Cardinalfish need?
An Amboina Cardinalfish needs at least 50 gal (190 L). It spends most of its time in the middle.
What temperature and pH do Amboina Cardinalfish need?
Amboina Cardinalfish are comfortable at 72–79°F (22–26°C) with a pH of 8.1–8.4.
How big do Amboina Cardinalfish get?
An adult Amboina Cardinalfish reaches about 3.5 in (9 cm).
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Saltwater fish · Beginner fish · Reef-safe fish · Beginner saltwater fish
Keeping Amboina Cardinalfish?
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Related species

Orbiculate Cardinalfish
Sphaeramia orbicularisSaltwater3.9 in (10 cm)30 gal (115 L)75–82°F (24–28°C)
Seale's Cardinalfish
Ostorhinchus sealeiSaltwater3.9 in (10 cm)29 gal (110 L)72–79°F (22–26°C)
Pajama Cardinalfish
Sphaeramia nematopteraSaltwater3.1 in (8 cm)29 gal (110 L)72–81°F (22–27°C)
Yellowstriped Cardinalfish
Ostorhinchus cyanosomaSaltwater3.1 in (8 cm)30 gal (114 L)72–79°F (22–26°C)
Black Cardinalfish
Apogonichthyoides melasSaltwater4.3 in (11 cm)29 gal (110 L)72–79°F (22–26°C)
Blue-Eye Cardinalfish
Ostorhinchus compressusSaltwater4.7 in (12 cm)53 gal (200 L)72–79°F (22–26°C)
