Pajama Cardinalfish
The Pajama Cardinalfish (Sphaeramia nematoptera) is a hardy, peaceful marine fish known for its unusual pattern and calm personality. Its silver front half, bold black midsection band and red-spotted rear give it the distinctive “pajama” appearance that makes this species instantly recognisable.
Well suited to both reef and peaceful community aquariums, Pajama Cardinalfish are an excellent choice for fishkeepers wanting an easy-care marine fish that remains visible in the open water.
Why Choose a Pajama Cardinalfish?
- Distinctive red-spotted and silver colouration
- Peaceful community fish
- Reef safe with corals and invertebrates
- Hardy and relatively easy to care for
- Suitable for newer marine fishkeepers
- Displays natural social behaviour when kept in a group
- Comfortable spending time in the open water
Aquarium Requirements
Provide an established marine aquarium of at least 100 litres with stable water conditions, open swimming space and plenty of rockwork or sheltered areas.
Pajama Cardinalfish can be kept individually but are particularly impressive in a small group of approximately three to six fish. A group allows them to display more natural schooling and social behaviour.
Their peaceful temperament makes them suitable for housing with other calm marine fish. Avoid large, aggressive or highly territorial tankmates that may intimidate them or prevent them from feeding.
Reef Compatibility
The Pajama Cardinalfish is considered reef safe and will not normally damage corals or ornamental invertebrates. Its gentle behaviour and tendency to hover through the water column make it an excellent addition to a mixed reef aquarium.
Feeding
Pajama Cardinalfish are carnivorous and should be offered a varied diet of appropriately sized marine foods, including:
- Frozen mysis shrimp
- Enriched brine shrimp
- Quality marine pellets
- Marine flakes
- Finely chopped meaty frozen foods
Feed small portions regularly and ensure quieter fish receive enough food when housed with faster or more competitive tankmates.
Pajama Cardinalfish Care Information
Scientific Name: Sphaeramia nematoptera
Care Level: Easy
Temperament: Peaceful
Reef Safe: Yes
Minimum Aquarium Size: 100 litres
Diet: Carnivore
Recommended Group Size: Three to six
Suitable For: Peaceful marine and reef aquariums
With its unusual appearance, peaceful temperament and straightforward care requirements, the Pajama Cardinalfish is an excellent choice for both newer and experienced marine fishkeepers.
