Torch Coral (Euphyllia glabrescens) Care Guide

Propagating Gold Torch Coral (Euphyllia glabrescens)

Overview

The Gold Torch is a prized color morph of Euphyllia glabrescens with metallic gold tentacles and pink or purple tips, collected mainly from Australia. It is a large-polyped stony coral of the family Euphylliidae with long tubular tentacles arranged on a phaceloid skeleton of corallites about 20-30 millimeters across. Like the base species it depends on symbiotic zooxanthellae and is a slow grower.

Reproductive Mode

As a morph of Euphyllia glabrescens, the Gold Torch reproduces sexually in the wild and asexually by colony division. Because the gold coloration is a clonal trait, hobbyists multiply this morph only by fragging, separating individual heads to preserve the parent's color.

Fragging / Asexual Propagation

Each torch head sits on its own corallite within the phaceloid skeleton, so the Gold Torch is fragged by cutting between heads along the skeleton, generally without cutting living flesh. Each frag keeps a head on its own piece of skeleton, and after dipping and mounting it heals and grows out into a new colony.

1. Use sterile bone cutters or a rotary tool, with gloves and eye protection.
2. Cut between heads along the phaceloid skeleton, keeping skeleton under each head.
3. Avoid cutting into polyp flesh to limit the chance of infection.
4. Dip and mount the frags, then place them in adequate flow to heal.

Conditions for Propagation

Gold Torch frags recover under moderate lighting and moderate flow, with stable alkalinity, calcium, and magnesium and low nutrients. As a slow-growing collector morph, the Gold Torch settles gradually, so keep conditions steady and avoid disturbing freshly mounted frags while their tentacles re-extend.

Sexual Reproduction

Sexual reproduction follows that of Euphyllia glabrescens: broadcast spawning with gametes released into the water for external fertilization around lunar cues. This wild route is not used by hobbyists, who clone the morph through fragging to keep its gold color.

Common Challenges

Torch corals carry long sweeper tentacles tipped with potent stinging cnidocytes and are among the more aggressive Euphyllia, so Gold Torch frags need wide spacing from other corals. The most serious post-fragging risk is brown jelly disease, which can kill a colony within weeks and spread to neighbors; never frag or place a specimen already showing a brown gel-like coating.

Propagating Hellfire Torch Coral (Euphyllia glabrescens)

Overview

The Hellfire Torch is an ultra-rare designer color morph of Euphyllia glabrescens with fiery red-orange tentacles and golden-yellow tips. It is a large-polyped stony coral of the family Euphylliidae with long tubular tentacles arranged on a phaceloid skeleton of corallites about 20-30 millimeters across. Like the base species it depends on symbiotic zooxanthellae and is a very slow grower.

Reproductive Mode

As a morph of Euphyllia glabrescens, the Hellfire Torch reproduces sexually in the wild and asexually by colony division. Because its rare coloration is a clonal trait, hobbyists multiply this morph only by fragging, separating individual heads to preserve the parent's color.

Fragging / Asexual Propagation

Each torch head sits on its own corallite within the phaceloid skeleton, so the Hellfire Torch is fragged by cutting between heads along the skeleton, generally without cutting living flesh. Given its rarity, cuts should be conservative; each frag keeps a head on its own piece of skeleton, and after dipping and mounting it heals and grows out into a new colony.

1. Use sterile bone cutters or a rotary tool, with gloves and eye protection.
2. Cut between heads along the phaceloid skeleton, keeping skeleton under each head.
3. Avoid cutting into polyp flesh to limit the chance of infection.
4. Dip and mount the frags, then place them in adequate flow to heal.

Conditions for Propagation

Hellfire Torch frags recover under moderate lighting and moderate flow, with stable alkalinity, calcium, and magnesium and low nutrients. As a very slow-growing collector morph, it settles gradually, so keep conditions steady and avoid disturbing freshly mounted frags while their tentacles re-extend.

Sexual Reproduction

Sexual reproduction follows that of Euphyllia glabrescens: broadcast spawning with gametes released into the water for external fertilization around lunar cues. This wild route is not used by hobbyists, who clone the morph through fragging to keep its rare color.

Common Challenges

Torch corals carry long sweeper tentacles tipped with potent stinging cnidocytes and are among the more aggressive Euphyllia, so Hellfire Torch frags need wide spacing from other corals. The most serious post-fragging risk is brown jelly disease, which can kill a colony within weeks and spread to neighbors; never frag or place a specimen already showing a brown gel-like coating.

Indo Torch (Euphyllia glabrescens) Propagation Guide

Overview

The Indo torch is the widely traded Indonesian form of Euphyllia glabrescens, a large-polyped stony coral of the family Euphylliidae. Like all torches it builds a phaceloid skeleton of tubular corallites about 20-30 mm across, set on separate branches 15-30 mm apart. The Indo form is typically faster growing than Australian morphs, which means colonies reach fraggable size sooner.

Reproductive Mode

Aquarium propagation of Euphyllia glabrescens is asexual, by fragmentation. Each head sits on its own branch of skeleton, so a multi-head colony can be split into single-head frags that regrow independently. The branching skeleton is the trait that makes torches relatively straightforward to frag among LPS corals.

Fragging / Asexual Propagation

1. Wait until the colony has several heads on clearly separated branches before fragging.
2. Locate the bare skeleton between heads and cut there with coral cutters or, for a flatter edge, a band saw.
3. Keep the cut on the skeleton, not through the polyp flesh.
4. Dip the frags to clear hitchhiking pests before mounting.
5. Mount each single-head frag on a plug in gentle flow and medium light until the cut tissue heals.

Because the Indo form grows faster than aussie torches, fragged heads tend to fill out and become ready for the next round of propagation in a comparatively short time.

Conditions for Propagation

Hold temperature around 24-26 degrees Celsius and pH between 8.1 and 8.4, with stable alkalinity, calcium, and magnesium for skeleton growth. Medium flow and medium light support healing and tentacle extension once the frag settles.

Sexual Reproduction

Sexual reproduction in this species takes place on the reef and is not a practical route for hobbyists. The consulted sources do not document captive spawning of Euphyllia glabrescens, so propagation relies entirely on fragmentation.

Common Challenges

Torches extend long sweeper tentacles with potent stinging cells that can damage neighbouring corals, so frags must be spaced generously. Cut tissue is prone to brown jelly, a fast-spreading ciliate infection that can move between corallites and to nearby Euphyllia; standard practice is to frag away and discard the affected tissue.

Propagating Octopus Torch Coral (Euphyllia glabrescens)

Overview

The Octopus Torch is a designer color morph of Euphyllia glabrescens with short, thick tentacles and bicolor green and purple tips, collected mainly from Australia. It is a large-polyped stony coral of the family Euphylliidae with tubular tentacles arranged on a phaceloid skeleton of corallites about 20-30 millimeters across. Like the base species it depends on symbiotic zooxanthellae and grows slowly.

Reproductive Mode

As a morph of Euphyllia glabrescens, the Octopus Torch reproduces sexually in the wild and asexually by colony division. Because its distinctive coloration is a clonal trait, hobbyists multiply this morph only by fragging, separating individual heads to preserve the parent's appearance.

Fragging / Asexual Propagation

Each torch head sits on its own corallite within the phaceloid skeleton, so the Octopus Torch is fragged by cutting between heads along the skeleton, generally without cutting living flesh. Each frag keeps a head on its own piece of skeleton, and after dipping and mounting it heals and grows out into a new colony.

1. Use sterile bone cutters or a rotary tool, with gloves and eye protection.
2. Cut between heads along the phaceloid skeleton, keeping skeleton under each head.
3. Avoid cutting into polyp flesh to limit the chance of infection.
4. Dip and mount the frags, then place them in adequate flow to heal.

Conditions for Propagation

Octopus Torch frags recover under moderate lighting and moderate flow, with stable alkalinity, calcium, and magnesium and low nutrients. As a slow-growing collector morph, it settles gradually, so keep conditions steady and avoid disturbing freshly mounted frags while their tentacles re-extend.

Sexual Reproduction

Sexual reproduction follows that of Euphyllia glabrescens: broadcast spawning with gametes released into the water for external fertilization around lunar cues. This wild route is not used by hobbyists, who clone the morph through fragging to keep its color pattern.

Common Challenges

Torch corals carry long sweeper tentacles tipped with potent stinging cnidocytes and are among the more aggressive Euphyllia, so Octopus Torch frags need wide spacing from other corals. The most serious post-fragging risk is brown jelly disease, which can kill a colony within weeks and spread to neighbors; never frag or place a specimen already showing a brown gel-like coating.

Propagating Torch Coral (Euphyllia glabrescens)

Overview

Torch coral, Euphyllia glabrescens, is a large-polyped stony coral of the family Euphylliidae, named for its long tubular tentacles with knob-like, often bicolored tips. It forms a phaceloid arrangement of corallites about 20-30 millimeters across and occurs across the Indo-Pacific, including Indonesia, Fiji, Australia, Southeast Asia, and southern Japan, at depths of about 1 to 35 meters. It relies on symbiotic zooxanthellae for most of its energy.

Reproductive Mode

The torch coral reproduces sexually in the wild and asexually by colony division. Its phaceloid, branch-like skeleton with discrete corallites makes it relatively easy to frag by separating individual heads, which has contributed to its wide availability in the hobby.

Fragging / Asexual Propagation

Because each torch head sits on its own corallite within a phaceloid skeleton, fragging is done by cutting between heads along the skeleton, generally without cutting through living flesh. Each frag retains a head on its own piece of skeleton, and after dipping and mounting it heals and grows out into a new colony.

1. Use sterile bone cutters or a rotary tool, with gloves and eye protection.
2. Cut between heads along the phaceloid skeleton, keeping skeleton under each head.
3. Avoid cutting into polyp flesh to limit the chance of infection.
4. Dip and mount the frags, then place them in adequate flow to heal.

Conditions for Propagation

Torch frags recover under moderate lighting and moderate flow, with stable alkalinity, calcium, and magnesium and low nutrients. Torch corals are generally slower to settle than hammers or frogspawn, so keep conditions steady and avoid moving freshly mounted frags while their tentacles re-extend.

Sexual Reproduction

Sexual reproduction in Euphyllia is broadcast spawning, with gametes released into the water for external fertilization, typically synchronized to lunar cues. This wild route is not used for aquarium propagation, so torch coral is multiplied in captivity exclusively by fragging.

Common Challenges

Torch corals carry long sweeper tentacles tipped with potent stinging cnidocytes and are among the more aggressive Euphyllia, so frags need wide spacing from other corals. The most serious post-fragging risk is brown jelly disease, which can kill a colony within weeks and spread to neighbors; never frag or place a specimen already showing a brown gel-like coating.

Sources

1. marinespecies.org
2. en.wikipedia.org
3. Wikipedia content used under CC BY-SA 4.0