More info
Datasheet
| Minimum Tank Size | 100 litres / 26.42 US gallons |
| Maximum Size | 7.0cm / 2.76inches |
| Reef Compatible | Always reef safe |
| Temperament | Peaceful |
| Temperature | 22.2°C / 71.96°F - 25.6°C / 78.08°F |
| Specific Gravity | 1.020-1.025 |
| Carbonate Hardness | 8-12 |
| pH | 8.1-8.4 |
General Description
Ostorhinchus oxina, commonly known as the Cardinalfish, belongs to the Apogonidae family. These fish come in various colors and shapes, with a notable large mouth and a hearty appetite. Typically suited for aquariums, they are known to consume Artemia, Mysis, and krill, being opportunistic feeders in captivity.
Aquarium Suitability
Considered suitable for most aquariums, the Cardinalfish can be kept alone or in groups given adequate space. They are generally peaceful towards other tank mates, but may exhibit territorial behavior if space or food is limited.
Demands
Characterized as delicate, the Cardinalfish can be sensitive during transportation and acclimatization. It is advisable to provide hiding spots, especially when first introduced into the aquarium, to reduce stress levels.
Care and Hardiness
With a maximum size of 7.0cm, these fish require a minimum tank size of 100 liters. They thrive in water conditions with a pH of 8.1-8.4, a specific gravity of 1.020-1.025, and a temperature range of 22.2-25.6°C.
Reef Suitability
Adapted to reef environments, O. oxina is considered reef-safe, making them compatible with coral reef setups.
Aquarium Setup
When setting up an aquarium for Cardinalfish, it is crucial to provide hiding places such as rocks, corals, or sea urchins spines. These spaces mimic their natural habitat and offer security, especially during daylight hours.
Behaviour
Many Cardinalfish species are nocturnal, seeking shelter during the day. They may exhibit schooling behavior and are an excellent choice when attempting to set up a breeding tank due to their peaceful nature.
Feeding and Diet
Their diet should consist of small crustaceans like Krill, Mysis, and Artemia, along with zooplankton such as Cyclops and pods. Cardinalfish have a voracious appetite and will consume various food items available in the aquarium.
Habitat and Distribution
Ostorhinchus oxina is found in the East Indian Ocean, specifically in regions like the Maldives, India, and Sri Lanka. Preferring these warm waters, they inhabit reef environments with ample hiding spots and suitable prey for feeding.
Dimorphism
Not covered in the provided information.