Common name: Queensland combtooth blenny

Scientific name: Ecsenius mandibularis McCulloch, 1923
Blenny (Ecsenius sp.), Queensland

General information

The Mandibular Blenny, scientifically known as Ecsenius mandibularis, is a small, charismatic fish that is popular among reef aquarium enthusiasts. It is known for its unique behavior and its ability to help control algae in the aquarium. This species is often referred to as the Lawnmower Blenny due to its voracious appetite for various types of algae.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.022 to 1.025
Temperature
24 to 26 °C (75 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
12 cm (5″)
Care level
Moderate to easy Prefers complex rockwork
Diet
Herbivore Algae grazer in the wild
Social
Solo Can be territorial
Reefsafe
Yes
Aggression
Semi aggresive May nip at conspecifics
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
    Blennies
    Ecsenius
  7. Species
    Queensland combtooth blenny
    Ecsenius mandibularis McCulloch, 1923

Care

Mandibular Blennies are relatively easy to care for, provided their dietary needs are met. They thrive in well-established aquariums with plenty of live rock and algae growth. It is important to ensure that there is a continuous supply of algae or supplemental foods like algae sheets or prepared herbivore diets to keep them healthy and active.

Reproduction

In the home aquarium, breeding Mandibular Blennies can be a challenge. They are not commonly bred in captivity, and little is known about their reproductive habits in the home aquarium setting.

Habitat

The natural habitat of the Mandibular Blenny includes shallow reefs and lagoons where they can be found perching on rocks or coral heads. They are adept at finding small crevices and holes to hide in when they feel threatened. Their distribution ranges across the Indo-Pacific region.