Common name: Viridescent parrotfish

Scientific name: Calotomus viridescens (Ruppell, 1835)

General information

The Green Razorfish, scientifically known as Calotomus viridescens, is a species of parrotfish that exhibits vibrant green coloration and a distinctive filament on its dorsal fin. This species is not as common in the aquarium trade as some other parrotfish, but it can be a unique and colorful addition to larger marine aquariums.

Details

Recommended minimum tank volume
300 liter (79 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
22 to 28 °C (72 to 82 °F)
Acidity
pH 8.1 to 8.4
Average size
35 cm (1′2″)
Care level
Moderate to easy Needs ample grazing space
Diet
Herbivore Algae grazer, may need supplements
Social
Solo Can be territorial, best kept alone
Reefsafe
Yes
Aggression
Semi aggresive Territorial towards 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
    Parrotfish
    Scaridae
  6. Genus
    Parrotfish
    Calotomus
  7. Species
    Viridescent parrotfish
    Calotomus viridescens (Ruppell, 1835)
  8. Synonyms
    Callyodon viridescens (Ruppell, 1835)
    Scarus viridescens Rüppell, 1835

Care

Green Razorfish require large tanks with plenty of swimming space and a well-established live rock structure to mimic their natural reef environment. They are herbivores, so their diet should consist of marine algae and vegetable-based foods. It's important to note that they have beak-like teeth designed for scraping algae off surfaces, which can sometimes lead to them nipping at live corals.

Reproduction

In the wild, Calotomus viridescens is known to form harems with a dominant male and several females. They are broadcast spawners, releasing eggs and sperm into the water column where fertilization occurs. Reproduction in the home aquarium is rare and challenging.

Habitat

Green Razorfish are found in the Indo-Pacific region, from East Africa to the Line Islands, north to southern Japan, and south to New Caledonia. They inhabit coral reefs and rocky outcrops, often seen grazing on algae in shallow waters.