Aquarium Fish

Longfin Anthias/Rainbow Fairy Basslet

posted: 05/15/12
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Longfin Anthias/Rainbow Fairy Basslet
Courtesy of Drs. Foster and Smith
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One of the more difficult Anthias varieties to keep, the Longfin Anthias is also known as the Rainbow Fairy Basslet or Ventralis Anthias, does well when kept alone and requires a 70 liter (20 gallon) tank. Males tend to fight and may harass females unless the tank is large — at least 250 liters (65 gallons). The male's body is purple to reddish pink, with yellow fins and yellow markings on the face. The female is a dark orange-brown.

Members of the Anthias group all share the trait of being hermaphroditic. If a dominant male perishes, the largest female of the group will often morph to take its place.

The Longfin Anthias does best in low-to-moderate indirect lighting on a diet of zooplankton and floating filamentous algae.

Fish Facts

Name: Longfin Anthias/Rainbow Fairy Basslet (Pseudanthias ventralis)

Family: Serranidae

Range: Pacific

Size: Up to 3 inches

Diet: Carnivore

Tank Set-up: Marine: Coral or rock, plants

Reef Compatible: Yes

Tank Conditions: 72-78°F; sg 1.020-1.025; pH 8.1-8.4

Minimum Tank Capacity: 65 gallon

Light: Low

Temperament: Peaceful

Swimming Level: Middle

Care Level: Difficult

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