Orange Striped Cardinalfish

Apogon cyanosoma

Saltwater Fish Species Group: Cardinalfish Family: Apogonidae

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Water parameters

Temp 76-80 F Temperature

Maintaining a stable and appropriate temperature is critical for the survival of aquatic life.

pH 7.8 - 8.4 potential of Hydrogen

Measuring the acidity or alkalinity of water on a 0–14 scale, where 7 is neutral, 7 is alkaline.

NO3 1-20 ppm Nitrate

While less toxic than ammonia, high nitrate levels (above 40–80 ppm) are important to monitor because they can cause fish stress, stunted growth, and harmful algae blooms.

NO2 <0.0001 ppm Nitrite

It is a highly toxic, intermediate compound in the nitrogen cycle produced from broken-down ammonia

PO4 0.01 - 0.1 ppm Phosphate

It is essential for plant development but must be managed, as excess levels trigger nuisance algae blooms and inhibit coral calcification.

NH3 <0.1 ppm Ammonia

It is the primary killer of aquarium fish, causing gill damage, stress, and death

Ca 380 - 450 ppm Calcium

Supporting the growth, skeletal structure, and shell formation of corals, mollusks, crustaceans, and coralline algae

KH 8 - 12 dKH Alkalinity

It acts as a shield, neutralizing acids to prevent dangerous pH "crashes" that can harm fish, corals, and plants.

Mg 1200 - 1400 ppm Magnesium

It enables coral growth by supporting skeletal formation, assists in metabolic processes, and ensures that calcium is available for corals, clams, and coralline algae.

SG 1.023 - 1.026 SG Salinity

Essential for maintaining stable, natural water parameters, proper osmoregulation, and stress-free environments for marine fish and corals

ORP 250 - 400 mV Oxidation-Reduction Potential

A higher positive mV indicates clean, oxygen-rich water with high water quality, while low readings indicate high pollution.

About Orange Striped Cardinalfish

General information

The Orange Striped Cardinalfish is a small, peaceful fish that can grow up to 2.5 inches (6.5 cm) in length. It has a slender body with orange stripes and a silver-white body. These fish are easy to care for and make great additions to a reef tank.

Diet & nutrition

In the wild, the Orange Striped Cardinalfish feeds on plankton and small crustaceans. In an aquarium, they will eat a variety of frozen or live foods, including brine shrimp, mysis shrimp, and chopped seafood.

Determining sex

It is difficult to determine the sex of Orange Striped Cardinalfish visually as they have no distinguishable physical differences.

Breeding & spawning

Orange Striped Cardinalfish are egg layers and relatively easy to breed. A separate breeding tank is necessary for successful breeding. After spawning, the eggs will hatch in about 3 to 5 days, and the fry will be free-swimming within 24 hours.

Diseases

Orange Striped Cardinalfish are generally hardy and not prone to many diseases. However, like all fish, they are susceptible to ich and other common aquarium diseases.

Origination

The Orange Striped Cardinalfish is native to the Western Pacific, including the Philippines, Indonesia, and Australia.

Cautions

The Orange Striped Cardinalfish is a peaceful fish and can be kept with other non-aggressive fish species. However, they may become territorial towards their own kind and other similar cardinalfish species.

Acclimation process

Proper acclimation is important for the Orange Striped Cardinalfish as they are sensitive to changes in water conditions. It is recommended to slowly acclimate them by floating the bag in the aquarium for 15 to 20 minutes before introducing them into the tank.

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