Clown Coris juvenile (Coris aygula)

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Clown Coris juvenile
Coris aygula
Clown Coris juvenile (Coris aygula)
Name Clown Coris juvenile
Name Lat. Coris aygula
Family Wrasses
Family lat. Labridae
Order Wrasses & Relatives
Order lat. Labriformes
Origin Indo-West Pacific, Red Sea
Habitat Lagoons, seaward reefs
Diet Carnivore
pH 8,1-8,4
Hardness 8-10 °KH
Behavior Aggressive
Keeping Individual
Reef Compatible With caution
Care Level Difficult
Life Span N/A
Protection No
Metric Units
Size 120 cm
Temperature 22-28 °C
Salinity 33-36 ‰
Aquarium ~ 4.500 l
US Units
Size 47"
Temperature 72-82 °F
Salinity 1.020-1.025 sg
Aquarium ~ 1,100 gal

Distribution and habitat

The distribution area of Coris aygula is the Indian Ocean and the Red Sea as well as the western Pacific Ocean from the east coast of Africa via Indonesia to Japan and Australia. There they live in lagoons and on outer reefs near sandy bottoms and coral rubble up to 30 m depth.

Maintenance

They need a well-structured aquarium with plenty of swimming space and a reef structure (hiding and covering possibilities) with living stones that act like a biological filter and whose growth they can graze on, as well as sandy areas of fine, at least 20 cm deep sand (no coral rubble!). Only calcareous, heavy metal-free sands, gravels, stones or sea sand may be used

Filters, skimmers and heaters are necessary to ensure water quality, as well as pumps to simulate tides, swells and bottom currents. Lighting must be appropriate for the species' day-night rhythm

Salinity: 33-36 ‰ pH value: 8.1-8.4
Carbonate hardness: 8-10 °KH Nitrate content: 2-8 mg/l
phosphate content: 0.01-0.1 mg/l nitrite content: 0.0-0.05 mg/l

For salinity, an average value should be aimed for, which may only vary slightly by +/- 0.5 ‰. Ammonia and ammonium must not be measurable. Special attention must be paid to constantly good water quality.

Diet

They feed on small crustaceans and mollusks. The food change does not always succeed without problems. The food supply should consist of a combination of chopped shrimp, mussel and crab meat with live and frozen food such as mysis, krill, artemia and shrimp or a frozen food mixture enriched with vitamins. High-quality flake and granulated food is also often accepted after a period of acclimation. It is recommended to feed small portions several times a day, this reduces intra-species aggression and protects lower animals in the aquarium

Regular and varied feeding promotes health and increases resistance.

Behaviour and compatibility

Juvenile animals can be kept in a group. Adult animals live solitary and behave very aggressive within the species. Towards other not too small fish they behave peacefully.

Sex dimorphism

They are protogynous hermaphrodites, meaning that most males develop from functional females. Males grow a bump on their forehead and have an elongated first dorsal fin ray.

Reproduction and breeding

There are no known reports of successful breeding in the aquarium.

Important

Their color dress varies greatly depending on age. Adults are blue-green with a white or light green stripe around the middle of the body. When threatened, they sometimes bury themselves in the sandy substrate

As reef dwellers, they should be kept together with corals and not in a fish-only aquarium. With sufficient and varied feeding, which also reduces aggressiveness, they can be kept well with invertebrates (corals), only tubeworms, snails, crabs, etc. should be kept with caution

If different species are kept together, care should be taken to ensure that the fish match each other in terms of water quality and temperature requirements and social behavior, and that the setup meets the needs of all species kept together. New fish to be introduced must be acclimated slowly to the water in the aquarium

Further literature can be found in your pet store.

References

Text: Werner Winter; Image: Franz Lowak

Source: KUITER, DEBELIUS (2007): Atlas der Meeresfische: Die Fische an den Küsten der Weltmeere, Kosmos Verlag; BAENSCH & DEBELIUS (2006): Meerwasser Atlas Bd. 1, Mergus Verlag; ENGELMANN (2005): Zootierhaltung - Tiere in menschlicher Obhut: Fische, Verlag Harri Deutsch

  • Gemäß § 21 Abs. 5 Tierschutzgesetz idgF