Zebra Barred Dartfish saltwater fish care guide

The Zebra Barred Dartfish is an elongated, laterally compressed species with a pale greenish to green-gray body crossed by numerous narrow orange vertical bars. Blue-edged reddish-purple markings sit below the eye and along the chin, two diagonal blue bands trace the operculum, and blue spots decorate the second dorsal fin. The species ranges widely through the Indo-Pacific, from the Red Sea and western Indian Ocean east to the Line and Marquesas Islands, north to the Ryukyu Islands and southern Japan, and south to the southern Great Barrier Reef. Wild fish favor shallow, exposed seaward reefs over hard bottoms, frequently near cave openings and in areas swept by strong current. Adults reach roughly 4 inches.

Plan on a 30-gallon aquarium or larger, arranged with generous open water for hovering and live rock or rocky crevices that serve as immediate escape routes. A fine sand bed matters as well, since this dartfish will take shelter in the substrate when startled or settling in for the night. Live sand that supports planktonic life is a useful addition, and a refugium is beneficial though not necessary. Strong flow suits the species and mirrors the surge of its natural habitat. A hood or tightly fitted lid is not optional equipment here; the fish spooks quickly and is an accomplished jumper, and an open-top system is the most common way specimens are lost.

On the reef this is a planktivore, picking planktonic crustaceans and larvae from the passing current while holding position above its refuge. In the aquarium it accepts a carnivorous menu of small meaty items: enriched brine shrimp, mysis shrimp, finely chopped krill or seafood, other small fresh or frozen marine preparations, freeze-dried foods, and quality flakes. Particle size should stay small enough to be taken in open water rather than hunted off the rock.

Feed once or twice daily, with two smaller feedings suiting a fish that grazes continuously on drifting prey in nature. Dispensing finely chopped food upstream lets the current carry it into the hovering fish's feeding zone, which encourages natural picking behavior and reduces waste settling in the rockwork. A newly introduced specimen that hesitates to eat can often be started on live adult enriched brine shrimp.

Enriched Brine Shrimp Mysis Shrimp Finely Chopped Krill Chopped Seafood Frozen Marine Preparations Freeze-Dried Foods Quality Marine Flakes
This is a peaceful, constantly active fish that hovers in open or mid-water while staying within a dart of a cave or crevice, vanishing into cover at the first sign of disturbance. Wild individuals gather in small to large schools, and several may share a single refuge. Captive social guidance is not unanimous: some references recommend a pair or a small group of two to five introduced at the same time, while others advise a single specimen unless the fish are an established mated pair, because group members can chase and injure one another. Introducing multiples simultaneously, in a tank with several separate retreats, gives the best odds if a group is the goal.

Tankmates should be chosen from the peaceful community end of the spectrum. Avoid groupers, dottybacks, triggerfishes, aggressive angelfishes, and other predatory or pugnacious species that will bully a fish inclined to hide. The Zebra Barred Dartfish is reef safe and will not bother corals or clams, making it a reliable choice for mixed reef displays. Ornamental invertebrates are generally left alone, though a measure of routine observation is sensible with any new addition to an established invertebrate community.

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FAQ

Frequently Asked Questions

About the Zebra Barred Dartfish

  • What minimum aquarium size and layout does a Zebra Barred Dartfish need?
    Provide at least a 30-gallon aquarium with open swimming room, a fine sand bed, and live rock or crevices placed as secure retreats. A tightly fitted lid is essential, as this species jumps readily when startled.
  • Should it be kept singly, as a pair, or in a group?
    Guidance differs: some references recommend a pair or a group of two to five introduced at the same time, reflecting its wild schooling habit, while others suggest one per aquarium unless the fish are a mated pair, since group members may chase and injure each other.
  • What should it be fed, and how often?
    Offer small meaty, plankton-sized foods such as enriched brine shrimp, mysis shrimp, finely chopped krill or seafood, and other prepared marine items once or twice daily. Directing food into the current helps, and live enriched brine shrimp often convinces a reluctant new arrival to start eating.