Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

The Sebae Clownfish has a semi-aggressive and highly territorial temperament, which becomes more pronounced as they mature or when they form a breeding pair. They will vigorously defend their chosen area, especially their host anemone, against any intruders, including larger fish or even the hands of the hobbyist. Because of this protective behavior, they should not be housed with very timid species that are easily bullied. Providing ample space and visual barriers in the aquarium can help minimize territorial disputes.

Diet

Omnivore

As omnivores, Sebae Clownfish require a diverse and balanced diet containing both meaty foods and marine algae. They should be offered high-quality marine flakes, pellets, and a variety of frozen foods such as mysis shrimp, enriched brine shrimp, chopped krill, and clam. Including food preparations that contain spirulina or other greens helps support their health and vibrant coloration. Feeding them a varied diet also boosts their immune system and aids in overall longevity.

Life expectancy

10-15 years

Under optimal care and in a stable marine environment, the Sebae Clownfish can live for 10 to 15 years in captivity, with some specimens reaching even older ages. Achieving this long lifespan requires maintaining consistent water parameters, providing a balanced and varied diet, and minimizing tank stress. Regular monitoring of water quality and a disease-free environment are critical to their long-term health. Choosing healthy captive-bred individuals also increases their likelihood of a long life in the aquarium.

Sex ratio

ONE_TO_ONE

In the aquarium, Sebae Clownfish are best kept individually or as a single mated pair. Keeping multiple pairs or groups of this species in a standard tank is not recommended due to their strong territorial instincts, which can lead to severe fighting. They are sequential hermaphrodites, meaning the largest, most dominant individual in a pair will transition into a female. Introducing a smaller juvenile to an established single specimen is the safest way to form a pair.

Feeding frequency

Twice daily

It is recommended to feed the Sebae Clownfish small portions once or twice daily, which mimics their natural feeding habits on the reef. Feeding only what they can consume within a few minutes prevents excess food from settling and decaying in the tank. For juvenile fish, twice-daily feeding is especially beneficial to support their rapid growth and development. Consistent, regulated feeding helps keep their energy levels stable while preventing unnecessary nutrient spikes in the aquarium.

Bioload

Medium

The Sebae Clownfish produces a medium biological load, especially as it grows to its full adult size of up to six inches. To manage this waste, a robust filtration system consisting of a quality protein skimmer and efficient biological filtration is recommended. Regular partial water changes are essential to keep nitrate and phosphate levels low. Maintaining pristine water conditions is particularly important if they are housed alongside sensitive host anemones.

Flow

Moderate

This species prefers a moderate water flow in the aquarium, which replicates the conditions of their native reef slopes and lagoons. A moderate current is sufficient to carry food particles to the fish without forcing them to constantly swim against a tiring torrent. It is also the ideal flow level for hosting anemones like Stichodactyla haddoni, which require gentle water movement to clear waste and exchange nutrients. Proper positioning of powerheads ensures there are both active flow zones and calmer resting areas.

Jump risk

Yes

While clownfish are not the most active jumpers, the Sebae Clownfish still poses a moderate jump risk, particularly when startled, during territorial chases, or due to night frights. To prevent accidental escapes, a tight-fitting lid or a secure mesh cover is highly recommended. It is also beneficial to have a dim nightlight over the tank to reduce the likelihood of them jumping if startled in the dark. Ensuring there are plenty of caves and hiding places also reduces their stress and tendency to bolt upward.

Reproduction

Rare / not documented

Breeding Sebae Clownfish in captivity is moderately difficult but highly rewarding. They form monogamous pairs, and spawning typically occurs on a flat surface or rock cleared by the male near their host anemone. The female lays a clutch of adhesive eggs, which the male then guards, aerates, and cleans for about 7 to 9 days until they hatch, usually shortly after the lights go out. Raising the fry requires a dedicated rearing tank and a constant supply of live rotifers followed by baby brine shrimp.

Compatibility & tankmates

Territorial

Sebae Clownfish are compatible with many active, semi-aggressive reef community fish such as tangs, wrasses, damselfish, and larger gobies. However, they should not be kept with very passive species, like firefish or cardinalfish, which may be harassed by the clownfish's territorial behavior. They are completely reef-safe and will not harm corals, clams, or ornamental invertebrates. Care should be taken when keeping them with other clownfish species, as severe aggression is likely to occur.

Tank level

Middle/Bottom

Sebae Clownfish typically occupy the bottom-middle areas of the aquarium, where they stay close to their chosen territory or host anemone. If an anemone is not present, they will still hover around a specific rock structure or cave for security. While they will swim to other levels, including the surface, during feeding time, they rarely stray far from their safety zone. Providing plenty of live rock at these lower levels helps them feel secure and exhibit natural behaviors.