Dispar Anthias saltwater fish care guide

Pseudanthias dispar is a slender, fusiform anthias washed in peach, orange, pink, lavender and yellow. Females show orange along the back that fades to a pale lavender-to-white belly, with a pink stripe running across the face. Males grow larger, carry more saturated color and display a conspicuous bright-red dorsal fin that extends well above the body; elongated ventral fins add to the effect in both sexes. Adults reach roughly 4 inches. The species ranges through the western and central Pacific, from Christmas Island east to the Line Islands and from the Yaeyama Islands south to the Great Barrier Reef, Fiji and Samoa, where it hovers over shallow, current-swept outer reef slopes.

Housing should mirror that environment. A single specimen needs a minimum of 70 gallons, and a small harem is better served by an aquarium with a four-foot footprint; a large group of eight to ten females with one male calls for 125 gallons or more. Dedicate the bulk of the layout to open midwater swimming space, with live rock arranged into caves, cracks and crevices where the fish can retreat and rest. The system should be well established and stable, with pristine water quality, vigorous oxygenation and moderate to strong flow. A tight-fitting lid is essential, since startled anthias dart and jump. No particular substrate is required.

On the reef, this anthias is a zooplankton feeder, picking prey from the water column as current delivers it across the slope. In the aquarium, build the diet around small meaty items: mysis shrimp, enriched brine shrimp, finely chopped prawn, copepods, amphipods, rotifers and prepared zooplankton preparations. Once settled, most individuals also accept appropriately sized marine pellets and flakes.

Constant activity and a high metabolism make feeding frequency the deciding factor in long-term success. Offer small portions at least two or three times daily, and more often if the schedule allows. An automatic feeder or a productive refugium seeding live plankton into the display helps extend food availability between meals. Newly introduced specimens occasionally refuse frozen fare at first, in which case Cyclops, Artemia or live crustaceans can trigger a feeding response, though many fish transition from frozen foods to pellets without difficulty.

Mysis Shrimp Enriched Brine Shrimp Copepods Amphipods Rotifers Finely Chopped Prawn Prepared Zooplankton Small Marine Pellets
This is a restless, open-water fish that spends the day hovering and feeding above the rockwork. In nature, large aggregations break down into harems led by a single male, and if that male is lost, a dominant female will change sex to replace him. Aquarium groups should be heavily female-biased and generally contain only one male, because rival males fight. The species is peaceful and comparatively docile, but hierarchy-driven chasing appears when swimming room or food is in short supply, so generous open space and frequent meals keep the group settled.

Choose tankmates carefully. Peaceful community fish are ideal, while aggressive, territorial or fast, competitive feeders will intimidate a Dispar Anthias and keep it from eating enough. In a reef display the species is entirely safe: it poses no expected threat to stony or soft corals, and no particular risk to ornamental shrimp, crabs, snails or clams has been identified. Its bright coloration and midwater schooling behavior make it one of the more animated additions to a well-fed coral aquarium.

FAQ

Frequently Asked Questions

About the Dispar Anthias

  • What tank size is appropriate for a Dispar Anthias?
    Allow at least 70 gallons for a single specimen, and favor an aquarium with roughly four feet of swimming length for a small social group. A large harem of one male and eight to ten females may require 125 gallons or more.
  • Can it be kept singly, or should I buy a group?
    A single fish does well on its own, but the species naturally forms schools and harems. For a group, pair one male with several females and avoid housing two males together unless the aquarium is exceptionally large, since male-male aggression can be severe.
  • How often must Dispar Anthias be fed?
    Feed small portions at least two or three times per day, with additional meals being beneficial. Newly introduced fish may need live or highly attractive foods such as Cyclops or Artemia before they accept prepared diets.