Yellow-fin Chromis (Chromis flavipectoralis) Care Guide
Chromis flavipectoralis is an Indian Ocean damselfish of sheltered coral reefs, usually seen singly or in loose groups along upper reef slopes.
Compiled by Aquairi from published sources · Published · Updated
Overview
Chromis flavipectoralis, the yellow-fin or Malayan chromis, is a damselfish of the family Pomacentridae from the Indian Ocean. Its name refers to yellow coloration on the pectoral fin area. FishBase places it in the genus Pycnochromis (Pycnochromis flavipectoralis).
Taxonomy
- Family: Pomacentridae
- Genus: Chromis
- Scientific name: Chromis flavipectoralis
- Current placement: Pycnochromis flavipectoralis (FishBase)
Habitat
The species occurs in the Indian Ocean from the Maldives to Java, Indonesia. It is reef-associated, found on seaward reef slopes and sheltered coral reefs along upper slopes at depths of 2-15 m.
Tank requirements
- Minimum tank volume: 200 L
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- Specific gravity: 1.024-1.026
- Carbonate hardness (dKH): 8-12
- Group size: keep singly or in small groups
- Adult size: up to about 8 cm
- Lifespan: 8-15 years
Diet
Like other chromis it is an omnivore feeding on small planktonic items. In the aquarium small frozen and prepared marine foods offered two times daily are suitable.
Compatibility
A peaceful species usually seen singly or in loose groups in the wild. It mixes with clownfish, tangs, wrasses and gobies. Aggressive damselfish and predators such as lionfish should be avoided.
Reef compatibility
The yellow-fin chromis is reef-safe. It does not harm corals or invertebrates and suits reef aquariums with moderate flow.
Breeding
Reproduction involves distinct pairing, with males guarding and aerating the eggs. Captive breeding is considered difficult.
Yellow-fin Chromis Breeding Guide
Overview
Chromis flavipectoralis (recorded by FishBase as Pycnochromis flavipectoralis, also called the Malayan chromis) ranges in the Indian Ocean from the Maldives to Java and reaches about 8 cm. It occurs singly or in loose aggregations on seaward reef slopes and sheltered coral reefs. FishBase records it as oviparous with distinct pairing during breeding, demersal eggs adhering to the substrate, and male guarding and aeration. IUCN status is Least Concern.
Sexing
There is little permanent external difference between the sexes outside spawning, so breeding role is the practical guide. The male holds and tends the nest, while the female approaches to lay. As pairs form within loose groups, keeping several specimens together gives the best chance of a natural pairing.
Conditioning
A group in stable reef water reaches condition on several daily feedings of small planktonic and meaty foods. Frequent feeding suited to a reef-slope planktivore supports egg development consistent with the habit recorded on FishBase.
Breeding Setup
As with other pomacentrids the male clears a patch of hard substrate to make a nest, so the system should present exposed flat rock within a defensible territory. A moderately spacious reef tank lets a loose group settle while a male holds and prepares its nest site.
Spawning Behavior & Trigger
Courtship in damselfishes is ritualised, with rapid motion, chasing and fin extension by the male near the nest. The female lays a layer of sticky eggs on the cleared substrate, and the male follows to fertilise them externally. FishBase notes distinct pairing during breeding for this species.
Egg & Fry Care
The demersal eggs adhere to the substrate and are guarded and aerated by the male. Across Pomacentridae incubation lasts about two to seven days, after which larvae of roughly 2 to 4 mm enter a pelagic stage of about a week to over a month, feeding on very small live plankton such as cultured copepods.
Common Challenges
The pelagic larval phase is the limiting factor: the minute larvae need a continuous supply of dense live plankton that is impractical in a typical home tank. With no documented species-specific rearing protocol, captive spawning of Yellow-fin Chromis usually ends at the planktonic larval stage.