Threadfin Cardinalfish

This marine aquarium fish is known as Threadfin Cardinalfish and the correct latin name is Apogon leptacanthus. The family that this marine fish species belongs to is called the Cardinal family. (e) Origin of this fish is Indo-Pacific. (e)

Character and suggestions regarding care

A peaceful species which is recommended for beginners.

Threadfin Cardinalfish can grow up to 6 cm what is approximately 2 inches. 1 specimen basically needs at least 720cm² of water surface which is approximately 111 square inch. This fish should be kept in aquariums that are medium. (e) Medium aquariums have at least 113 Litres (30 US Gallons). Large aquariums have at least 265 Litres (70 US Gallons). Very large aquariums hold at least 700 Litres (185 US Gallons).

It is easy to keep the Threadfin Cardinalfish. (e) The specific gravity (SG) should be between 1,020 and 1,025, the temperature between 23°C (73.4°F) and 26°C (78.8°F). The suggested level of pH (a measure of the acidity/basicity) is between 8.0 and 8.3 which is usual for most marine fish.

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Related fish profiles in the database

• Apogon Binotatus (Barred Cardinalfish)
• Apogon Chrysopomus (Spotted-Gill Cardinalfish)
• Apogon Cyanosoma (Orange Striped Cardinalfish)
• Apogon Margaritophorus (Red-Striped Cardinalfish)
• Apogon Moluccensis (Moluccan Cardinalfish)
• Apogon Multilineatus (Many-Lined Cardinalfish)
• Apogon Notatus (Spotnape Cardinalfish)
• Apogon Novemfasciatus (Sevenstriped Cardinalfish)
• Apogon Pseudomaculatus (Flame Cardinal, Twospot Cardinalfish)
• Pterapogon Kauderni (Banggai Cardinal Fish, Kaudern’s Cardinal, Longfin, Banner Cardinal)
• Sphaeramia Nematoptera (Pajama Cardinalfish)

Recommended reading

• Saltwater aquarium heater
• Saltwater aquarium lights
• Saltwater aquarium filters
• Saltwater tank aeration
• Marine fish diseases
• Protein Simmers in the Saltwater Tank
• Setting up a Saltwater Tank
• Saltwater Fish Tanks
• Cleaner Shrimp
• Pajama Cardinals

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• Yellow Longnose Butterflyfish

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