Common name: Redtail filefish

Scientific name: Pervagor melanocephalus (Bleeker, 1853)
Blackheaded filefish, Pervagor melanocephalus, Sulawesi Indonesia.

General information

The Blackhead Filefish, scientifically known as Pervagor melanocephalus, is a unique and somewhat rare addition to the marine aquarium. This species is known for its distinctive black head and yellow-spotted body, which makes it a visually appealing choice for aquarists. It belongs to the family Monacanthidae, which is characterized by a single, retractable spine on the dorsal surface.

In the wild, these fish are often found in pairs or small groups, and they are known to be quite shy. They have a specialized diet that consists mainly of algae, small invertebrates, and sometimes coral polyps, which should be considered when keeping them in captivity.

Details

Recommended minimum tank volume
150 liter (40 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 27 °C (75 to 81 °F)
Acidity
pH 8.1 to 8.4
Average size
12 cm (5″)
Care level
Moderate to easy Prefers complex rockwork
Diet
Omnivore Varied diet incl. algae
Social
Solo Territorial, best kept alone
Reefsafe
Yes
Aggression
Semi aggresive May nip at slow fish
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Pufferfish
    Tetraodontiformes
  5. Family
    Filefish
    Monacanthidae
  6. Genus
    Spiny boxfish
    Pervagor
  7. Species
    Redtail filefish
    Pervagor melanocephalus (Bleeker, 1853)
  8. Synonyms
    Acreichthys melanocephalus (Bleeker, 1853)
    Monacanthus melanocephalus Bleeker, 1853
    Stephanolepis melanocephalus (Bleeker, 1853)

Care

Blackhead Filefish require a well-established aquarium with plenty of live rock for grazing and hiding. They are not considered reef-safe, as they may nip at soft corals and some invertebrates. A varied diet that includes marine algae, mysis shrimp, and other meaty foods is essential for their health. Due to their shy nature, they should be housed with peaceful tank mates and provided with a stress-free environment.

Reproduction

Little is known about the breeding habits of Pervagor melanocephalus in the wild or in captivity. They are presumed to be broadcast spawners, releasing eggs and sperm into the water column where fertilization occurs externally. In the aquarium, breeding is rare and not well documented.

Habitat

The Blackhead Filefish is typically found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They inhabit lagoons and coral reefs, often hiding among the branches of corals. They are usually observed at depths ranging from shallow waters to about 25 meters.

Given their natural habitat, maintaining water quality and providing a similar environment in the home aquarium is crucial for their well-being.