Common name: Threadless blenny

Scientific name: Meiacanthus anema (Bleeker, 1852)

General information

The Forktail Blenny, scientifically known as Meiacanthus anema, is a small and active fish that adds both character and utility to a saltwater aquarium. Its most distinctive feature is the forked tail from which it gets its common name. This species is part of the Blenniidae family and is known for its ability to deliver a mild venom through its fangs—a unique adaptation for defense.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 26 °C (75 to 79 °F)
Acidity
pH 8 to 8.4
Average size
11 cm (4½″)
Care level
Moderate to easy Needs hiding places
Diet
Omnivore Varied diet, incl. mysis
Social
Pair Can be kept in pairs
Reefsafe
Yes
Aggression
Semi aggresive May nip fins of slow fish
Captive bred
Yes Available as captive-bred

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
    Fang Blennies
    Meiacanthus
  7. Species
    Threadless blenny
    Meiacanthus anema (Bleeker, 1852)
  8. Synonyms
    Meicanthus anema (Bleeker, 1852)
    Petroscirtes anema Bleeker, 1852
    Petroskirtes anema Bleeker, 1852

Care

Forktail 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 perching and hiding. These fish are omnivorous and will accept a variety of foods, but a diet that includes marine algae and meaty foods will help maintain their health and coloration.

Reproduction

In the wild, Forktail Blennies are oviparous, with males often guarding and aerating the eggs until they hatch. Breeding them in captivity can be challenging, but with the right conditions and a well-maintained breeding tank, it is possible for hobbyists to witness their fascinating reproductive behavior.

Symbiosis

While not involved in the classic symbiotic relationships seen in some marine species, Forktail Blennies do play a role in the control of nuisance pests, such as bristle worms, by preying on them. This can be beneficial in maintaining the ecological balance within the aquarium.

Habitat

Meiacanthus anema is native to the Western Pacific, where it is typically found in shallow, coral-rich areas and lagoons. They are adept at navigating the complex structures of coral reefs and are often observed darting in and out of crevices.