Delta Killi (Fundulopanchax deltaensis)
| Delta Killi Fundulopanchax deltaensis | |
|---|---|
 | |
| Name | Delta Killi |
| Name Lat. | Fundulopanchax deltaensis |
| Synonym | Aphyosemion deltaense |
| Family | African Rivulines |
| Family lat. | Nothobranchiidae |
| Order | Killifishes & Livebearers |
| Order lat. | Cyprinodontiformes |
| Origin | Nigeria |
| Habitat | Ponds, floodplains |
| Diet | Carnivore |
| pH | 6.0-7.5 |
| Behavior | ♂ territorial |
| Keeping | Harem |
| Care Level | Moderate |
| Reproduction | Substrate spawner |
| Breeding | Moderately difficult |
| Life Span | 1-1.5 years |
| Protection | No |
| Metric Units | |
| Size | 8 cm |
| Temperature | 20-26 °C |
| Hardness | < 10 °dH |
| Aquarium | ~ 120 l |
| US Units | |
| Size | 3" |
| Temperature | 68-79 °F |
| Hardness | < 178 ppm |
| Aquarium | ~ 30 gal |
Distribution and habitat
Delta splendid carps are found in the periodically drying waters of coastal savannas in the western Niger Delta of southern Nigeria. They live in shallow, weedy pools, marshes, floodplains, and outcrops of small, slow-flowing rainforest streams. There are some distinctly different colored site variants.
Maintenance
The aquarium should have dense planting, with hiding and retreat possibilities (roots) and provide sufficient swimming space. A soft, dark substrate covered with some foliage (e.g. sea almond leaves) and slightly shaded light (floating plants) is ideal
No ammonia, ammonium and nitrite should be detectable, the nitrate value should not exceed 100 mg/l. To ensure the water quality and oxygen content, a filter and heater adapted to the aquarium size is required, as well as lighting for the species-appropriate day-night rhythm of the animals.
Diet
In nature they feed mainly on insects and insect larvae. The food supply consists of live, frozen and dry food. For a balanced diet, feed once a day with a high-quality, protein-rich dry food (flakes, granules, micropellets) and with cyclops, moina, daphnia, artemia, mosquito larvae, etc. (live or frozen)
It is recommended to feed small portions several times a day. Only feed as much as will be eaten within a few minutes. A regular and varied diet promotes health and increases resistance.
Behaviour and compatibility
They should be kept in a harem, one male with 2-3 females. Males often behave aggressively among themselves, so keeping multiple harems is only recommended in a larger and richly structured tank. They can be kept well in a species tank or also in a community tank with not too lively fish, whereby too small fish are considered as food. Basically, only compatible fish species with similar demands on water condition and water temperature should be socialized.
Sex dimorphism
The male has extended fins and is much more colorful than the female.
Reproduction and breeding
They are called "bottom plowers" or "in-ground spawners" that reproduce during the rainy season (continuous spawners). To spawn, the female nestles close to the male and together they churn up the bottom substrate where spawning occurs. The eggs survive the dry period in the substrate. After 3-6 months (diapause), the fry hatch just a few hours after the first rain. They grow very quickly and are already sexually mature after about 3 weeks.
Important
They are annual killifish that live in waters that periodically dry up completely and die off during the dry season (seasonal fish)
Different site varieties of delta splendid killifish should not be kept together, as they may interbreed (hybridize). They like to jump, so the aquarium should be well covered. Foliage (sea almond tree, oak, etc.) enriches the water with humic substances, naturally lowers the pH, and when decaying promotes the development of microorganisms, which are a valuable secondary food source.
The well-being of the fish should be monitored regularly. Temperature should be checked daily, pH, hardness and nitrate levels at least every 14 days. Regular partial water changes are recommended, even when contaminant levels have not yet reached the upper limit. Sudden changes in water quality should be avoided. Newly introduced fish must be accustomed slowly to the water in the aquarium.
Further literature can be found in your pet store.
References
Text: petdata; Image: Franz Lowak
Source: BMELV (1998): Tierschutzgutachten - Haltung von Zierfischen (Süßwasser); RIEHL & BAENSCH (2006): Aquarien Atlas Bd. 1, Mergus Verlag; RADDA & PÜRZL (1981): Killifische aus aller Welt, Band 1, Verlag Otto Hoffmann; ENGELMANN (2005): Zootierhaltung - Tiere in menschlicher Obhut: Fische, Verlag Harri Deutsch
Gemäß § 21 Abs. 5 Tierschutzgesetz idgF