Overview
The Banggai Cardinalfish (Pterapogon kauderni) is a saltwater fish belonging to the family Apogonidae. It thrives at temperatures of 24–27 °C with a pH of 8.1–8.4, and requires a minimum tank volume of 120 litres. Known for its peaceful reef fish; can be kept in groups if space allows, it is considered a intermediate-level species. Paternal mouthbrooder — the male carries eggs and fry in his mouth for about 3–4 weeks. Water changes of 25–30 % weekly, stable parameters, and appropriate tank mates are key to long-term success with this species.
Scientific Classification
| Rank | Classification |
|---|---|
| Family | Apogonidae |
| Genus | Pterapogon |
| Species | Pterapogon kauderni |
| Water type | saltwater |
Natural Habitat
Pterapogon kauderni originates from tropical waters. It inhabits saltwater environments and is adapted to the water conditions found in its native range.
Appearance
Adults reach 6–8 cm in length. The body is saltwater and the species displays characteristic coloration suited to its environment.
Behavior
This species is described as a peaceful reef fish; can be kept in groups if space allows. It does not school and can be kept individually or in small numbers. Activity level is low. Paternal mouthbrooder — the male carries eggs and fry in his mouth for about 3–4 weeks.
| Trait | Value |
|---|---|
| Temperament | peaceful reef fish; can be kept in groups if space allows |
| Schooling | No |
| Activity level | low |
Water Requirements
| Parameter | Ideal Range | Notes |
|---|---|---|
| Temperature | 24–27°C (75–81°F) | Use a reliable adjustable heater |
| pH | 8.1–8.4 | Avoid sudden swings |
| Hardness (GH) | 8–12 dKH (alkalinity) dGH | Soft to moderately hard |
| Ammonia | 0 ppm | Any detectable ammonia signals a problem |
| Nitrite | 0 ppm | Toxic even at low levels |
| Nitrate | <5 ppm | Manage through regular partial water changes |
| Min. tank | 120L (32 gal) | Larger tanks are easier to keep stable |
Interesting Facts
- ENDANGERED — endemic only to the Banggai Islands of Indonesia; wild collection is a conservation concern.
- The male fasts completely while mouthbrooding, providing no nutrition to himself for 3–4 weeks.
- Captive-bred Banggai Cardinalfish are available and strongly preferred over wild-caught specimens.
📋 Full Care Guide
Ready to set up a tank for your Banggai Cardinalfish? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.
Read Banggai Cardinalfish Care Guide →Related Species
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This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.