Common name: Spotted-chin blenny

Scientific name: Cirripectes castaneus (Valenciennes, 1836)
A Chestnut Blenny (Cirripectes castaneus) in the Red Sea, Egyptchestnut blenny (cirripectes castaneus)
Barred Blenny (Cirripectes polyzona) peeks out from the hole where it usually hides. Macro photo taken in Malapascua island, Cebu Philippineschestnut blenny

General information

The Chestnut Blenny, scientifically known as Cirripectes castaneus, is a small, charming fish that is well-suited for reef aquariums. It is part of the Blenniidae family, which is known for its members' unique personalities and behaviors. This species is often appreciated for its mottled brown coloration that allows it to blend seamlessly with its surroundings.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
22 to 26 °C (72 to 79 °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; flakes, pellets, algae
Social
Solo Can be territorial
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
    Perch-like Fishes
    Perciformes
  5. Family
    Blennies
    Blenniidae
  6. Genus
    Blenny
    Cirripectes
  7. Species
    Spotted-chin blenny
    Cirripectes castaneus (Valenciennes, 1836)
  8. Synonyms
    Cirrhipectes castaneus (Valenciennes, 1836)
    Cirripectes gibbifrons Smith, 1947
    Cirripectes reticulatus Fowler, 1946
    Cirripectus castaneus (Valenciennes, 1836)
    Cirripectus gibbifrons Smith, 1947
    Salarias castaneus Valenciennes, 1836

Care

Chestnut Blennies are hardy and adaptable, making them suitable for both novice and experienced aquarists. They thrive in well-established aquariums with plenty of live rock for grazing and hiding. These blennies are herbivores, and their diet should include a variety of algae-based foods to maintain their health and coloration.

Reproduction

In the wild, Chestnut Blennies are oviparous, with males often guarding and aerating the eggs until they hatch. While breeding them in captivity can be challenging, it is possible with a well-maintained setup and attention to their specific breeding behaviors.

Habitat

Cirripectes castaneus is commonly found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They prefer shallow, coral-rich environments and are often seen perched on coral branches or nestled in crevices.