The Tierra Anthias, also called the Resplendent Anthias, is a small planktivorous anthiine from the western Indian Ocean, recorded around the Maldives, the Chagos Archipelago, the Seychelles, and reefs bordering the Andaman Sea. Females wear an orange body washed with pinkish-purple, offset by a vivid yellow face and nose and matching yellow dorsal and caudal fins. Males develop deeper orange-pink coloration with a yellow-orange face, nearly transparent caudal fins, pink-edged pectoral and anal fins, and blue pelvic fins rimmed in red. Adults finish at roughly three inches, making this one of the more compact anthias available to reef keepers.

Wild populations gather in dense harems that hover above caves and steep overhangs on deep outer reef slopes, from about 30 feet to more than 230 feet, frequently below 100 feet along current-swept drop-offs. Recreating that structure matters in captivity. A mature reef or fish-only-with-live-rock system of at least 70 gallons suits a single specimen or a small group, while a full harem of one male and multiple females is far better served by 125 to 150 gallons or more. Build generous live rock into crevices, ledges, caves, and overhangs so the fish can retreat into shade, use a coralline gravel substrate, and leave broad open midwater lanes for swimming.

This species favors dimmer conditions, so shaded zones and a dawn-to-dusk lighting cycle help when the display is lit brightly for corals. A tight-fitting mesh screen or glass cover is essential, as Tierra Anthias are known jumpers. The frequent feeding schedule this fish demands loads the system, so pair it with heavy filtration, aggressive protein skimming, consistent water changes, and nutrient export media to hold nitrate and phosphate near zero.

On the reef, Tierra Anthias intercept drifting oceanic plankton, including pelagic copepods, invertebrate and tunicate larvae, fish eggs, amphipods, and mysid shrimp. That constant grazing on small, protein-rich prey defines how the fish should be fed in an aquarium. Offer frozen calanus and cyclops, vitamin-enriched frozen mysis and brine shrimp, and finely chopped prawn and krill, transitioning established individuals onto high-protein pellets or flakes as a supplement rather than a foundation.

Feed small portions two to four times daily. Newly introduced fish are shy and stress easily, and acclimation success improves markedly when live foods are offered to trigger a feeding response in the first weeks. Once a specimen is settled and picking natural plankton and micro-crustaceans from the rockwork, feeding frequency can be reduced, though variety should be maintained. Because this fish cannot store much energy at three inches, missed meals show up quickly as lost condition, which is a large part of why its care requirements sit at a moderate level.

Frozen Calanus Frozen Cyclops Enriched Frozen Mysis Shrimp Vitamin-Fortified Brine Shrimp Finely Chopped Prawn Finely Chopped Krill High-Protein Marine Pellets
Tierra Anthias are peaceful, docile, and somewhat timid, spending their time hovering in the water column above rockwork and darting into crevices when startled. They are protogynous hermaphrodites that live in harems built around one dominant male and several females; should the male be lost, the largest and most assertive female will change sex to take his place. Groups fare better than lone individuals, with one male to as many as ten females being the ideal arrangement, although a single fish or a small cluster of females also works. The main friction within a group comes from similarly sized and similarly colored individuals, especially in crowded quarters, and a larger group of eight or more helps spread that pressure across more fish.

Provide enough space and shelter that lower-ranking members of the hierarchy are not outcompeted for food, since subordinate fish in undersized tanks can decline from stress and hunger. Choose tankmates with care: overly boisterous or large species will intimidate this anthias and beat it to every meal, so aggressive companions should be avoided. Compatibility with invertebrates is excellent. This species is reef safe, feeds strictly on plankton in the water column, and poses no known threat to corals, clams, or other sessile invertebrates, which makes it a natural fit for a well-established mixed reef.

FAQ

Frequently Asked Questions

About the Tierra Anthias - Female

  • What is the minimum tank size for a Tierra Anthias?
    Plan on at least 70 gallons for a single specimen or small group. A full harem of one male with several females is better housed in 125 to 150 gallons or more.
  • Is the Tierra Anthias reef safe with corals and invertebrates?
    Yes. This planktivore feeds in the water column and is fully compatible with corals and invertebrates, posing no known threat to sessile invertebrates.
  • How often should a Tierra Anthias be fed?
    Offer small feedings two to four times daily, using enriched frozen mysis and brine shrimp, copepods, and finely chopped seafood. Frequency can ease off once the fish is established and foraging on natural food in the tank.