Threadfin Hawkfish (Cirrhitichthys aprinus) Care Guide
Cirrhitichthys aprinus is a small Indo-West Pacific hawkfish that perches on reef structure and preys on small fishes and crustaceans.
Overview
Cirrhitichthys aprinus, commonly called the spotted or threadfin hawkfish, is a small marine fish of the family Cirrhitidae. It is widespread across the Indo-West Pacific. Like other hawkfishes, it lacks a swim bladder and rests on benthic structure, using thickened lower pectoral fin rays to perch before ambushing prey. FishBase records a maximum total length of 12.5 cm.
Taxonomy
- Family: Cirrhitidae
- Genus: Cirrhitichthys
- Scientific name: Cirrhitichthys aprinus
- Described by Georges Cuvier in 1829 (originally as Cirrhites aprinus)
Habitat
The species occurs across the Indo-West Pacific, with records from Sumatra and the Maldives to the Solomon Islands, the Philippines, southern Japan and Australian waters. It inhabits rocky and coral areas of subtidal coastal reefs and also moves into shallow harbours and estuaries. FishBase reports a depth range of 5 to 40 m, typically between 12 and 20 m.
Tank requirements
- Minimum tank volume: 200 L (about 53 gal)
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- Carbonate hardness / GH range: 8-12 °dGH
- Lifespan: 5-10 years
Diet
Cirrhitichthys aprinus is carnivorous, with a FishBase trophic level of 3.5. In the wild it feeds on small fishes and crustaceans. In captivity it accepts meaty marine foods offered about twice daily.
Compatibility
This is a bottom-perching, semi-aggressive species that does not school. It is best kept with robust tankmates such as tangs, wrasses and triggers. Because it preys on small crustaceans, ornamental shrimp, small invertebrates and very small fish are at risk and should be avoided.
Breeding
Hawkfishes of this group are protogynous hermaphrodites that form harems. The species is a pelagic spawner; spawning pairs ascend a short distance into the water column to release eggs and milt. Captive breeding is considered an expert-level challenge.
Conservation status
IUCN Red List: Least Concern (assessed 2015). FishBase rates its fishing vulnerability as low.