Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

The temperament of this fish is semi-aggressive, with a marked propensity to patrol and vigorously defend its chosen rocky den. Despite this territoriality, in spacious aquariums with a layout rich in rocks and hiding spots, it coexists well with other inhabitants without causing excessive stress. Its strong personality makes it a very active and visible fish at all levels of the tank.

Diet

Omnivore

This species is omnivorous and requires a varied diet to satisfy both the protein and plant-based components of its nutrition. In the aquarium, it accepts high-quality commercial pellets and flakes enriched with vitamins, frozen mysis, brine shrimp, and copepods. Periodically supplementing the diet with dried marine algae or spirulina helps maintain its bright colors, particularly the clean and attractive dorsal yellow coloration.

Sex ratio

Flexible

Solitary or pairs

Feeding frequency

Twice daily

It is recommended to feed this species twice daily with portions suitable for the size of the fish. Providing moderate amounts regularly reduces food competition with other tankmates and supports a correct energy metabolism. Avoiding food excesses is essential to keep marine water quality intact and prevent pollution.

Bioload

Starck's damselfish contributes a relatively modest biological load compared to larger, more aggressive marine species. Their diet mainly consists of small crustaceans, algae, and standard aquarium preparations, leading to a manageable waste output. Aquariums equipped with a good protein skimmer and adequate biological filtration will handle their bioload effortlessly. Because they tend to be slightly more peaceful and less hyperactive than other damselfish, their overall metabolic output remains quite low.

Flow

Strong

It shows a preference for moderate to strong water movement, simulating the currents of the deep rocky reefs where it lives in the wild. Efficient filtration and good water circulation ensure a high level of dissolved oxygen, ideal for this damselfish. However, it is recommended to arrange rocks to form protected caves and low-flow zones for resting.

Jump risk

No

Reproduction

Oviparous

This damselfish is a benthic egg-layer, depositing eggs on hard substrates within well-defended rocky caves or cracks. The male assumes the role of exclusive guardian of the eggs, also handling their cleaning and constant aeration until hatching. Due to the very small size of the larvae and their long suspended pelagic stage, aquarium breeding is extremely complex and requires dedicated management with targeted live food.

Compatibility & tankmates

Semi-aggressive

This species is semi-aggressive and displays territoriality primarily toward conspecifics or fish showing similar color patterns and shapes. It is perfectly compatible with corals and most invertebrates, making it suitable for modern community reef aquariums. It is recommended to house it with active and robust fish, avoiding introduction with overly vulnerable or timid species.

Tank level

All levels

This species prefers to inhabit the middle and lower strata of the aquarium, strongly favoring areas with complex rockwork and deep crevices. They are rarely seen swimming freely in the upper, open zones of the water column, choosing instead to hover near their chosen territory. The rockwork provides them with essential security and a place to retreat when intimidated. A well-designed reef structure that offers verticality and hiding spots will perfectly suit their natural hovering behavior.