White Bonnet Anemonefish Care Guide
Amphiprion leucokranos is a naturally occurring hybrid anemonefish from the western Pacific, distinguished by a white cap on top of the head.
Compiled by Aquairi from published sources · Published · Updated
Overview
Amphiprion leucokranos is a marine anemonefish of the family Pomacentridae found in the western central Pacific. The body is orange to light brown with a white head bar and a distinctive white mark or cap on top of the head. Its hybrid status was confirmed in 2015 through ecological, morphological and genetic evidence, with Amphiprion chrysopterus and Amphiprion sandaracinos identified as parent species.
Taxonomy
- Family: Pomacentridae
- Genus: Amphiprion
- Scientific name: Amphiprion leucokranos
- Origin: naturally occurring hybrid of Amphiprion chrysopterus and Amphiprion sandaracinos
- Common name: White bonnet anemonefish
Habitat
The species occurs along the north coast of New Guinea and around Manus Island, the D'Entrecasteaux Islands, New Britain and the Solomon Islands, the region where the ranges of its two parent species overlap. FishBase records it from lagoons and outer reef slopes at depths of about 2-12 m. It hosts in three anemone species: Heteractis crispa, Heteractis magnifica and Stichodactyla mertensii.
Tank requirements
- Minimum tank volume: 150 L
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- Carbonate hardness (dKH): 8-12
- Specific gravity: 1.024-1.026
- Maximum size: about 11-12 cm
- Lifespan: 11-13 years
Reef compatibility
Amphiprion leucokranos is reef-safe and does not harm corals or invertebrates. One of its host anemones is appreciated but not essential for captive care.
Diet
It is an omnivore that feeds on zooplankton and algae in the wild. In aquaria it accepts marine pellets, frozen mysis and enriched brine shrimp, fed about twice daily.
Compatibility
The fish is semi-aggressive and territorial near its host. Tangs, royal gramma, wrasses and cleaner shrimp are suitable companions, while other clownfish species and aggressive triggerfish should be avoided. Keep one bonded pair per anemone.
Breeding
The species is a protandrous sequential hermaphrodite with a strict size-based dominance hierarchy. Spawning is oviparous with distinct pairing; the demersal eggs adhere to substrate and are guarded and aerated by the male. It has been reared in captivity.
Conservation status
IUCN Red List: Least Concern, assessed in 2021.
White Bonnet Anemonefish Breeding Guide
Overview
Amphiprion leucokranos, the white bonnet anemonefish, is a naturally occurring hybrid between A. chrysopterus and A. sandaracinos, a status confirmed in 2015 by combined ecological, morphological and genetic evidence. It occurs in the Western Central Pacific (north coast of New Guinea through New Britain and the Solomon Islands) where the parent species ranges overlap, reaches about 11 cm and hosts the anemones Heteractis crispa, Heteractis magnifica and Stichodactyla mertensii. Because it is a hybrid, captive reproduction is unusual and breeding follows the general Amphiprion pattern; its hybrid origin should be noted on any offspring.
Sexing
Like other clownfish, A. leucokranos is protandrous: a breeding male changes sex to female if the sole breeding female dies, within a strict size-based dominance hierarchy where the female is largest and the breeding male is second. There are no reliable external sex differences, so sex is read from social rank and size within the group.
Conditioning
A pair forms through the dominance hierarchy among juveniles or by pairing a large with a small fish. Stable reef parameters and regular omnivore feeding condition the pair. The natural hosts Heteractis crispa, Heteractis magnifica or Stichodactyla mertensii reflect wild ecology but are not mandatory for aquarium spawning.
Breeding Setup
- Established male/female pair (largest fish becomes female)
- Mature reef aquarium with stable salinity and temperature 24-26 C
- A flat rock or hard surface near shelter for egg deposition
- pH 8.1-8.4, strong biological filtration
Spawning Behavior & Trigger
Amphiprion spawning is tied to the lunar cycle and often peaks around the full moon. The male courts by chasing and nibbling the female and erecting his fins. The female cleans a rock surface and lays up to about a thousand conical eggs around 3-4 mm long that adhere to the substrate, which the male fertilises externally.
Egg & Fry Care
The male cleans, guards and fans the clutch with his pectoral fins. Incubation lasts about six to seven days, with the eggs darkening from orange as embryos develop. Hatched larvae enter a pelagic stage of up to roughly twelve days before settling and seeking a host anemone.
Common Challenges
Beyond the demanding pelagic larval phase, which needs rotifers and enriched Artemia in a dedicated larval tank, A. leucokranos poses a special consideration: as a natural hybrid its reproductive outcomes are less predictable, and any captive-raised offspring should be clearly labelled as hybrid stock to avoid contaminating species lines in the hobby.