The frag hub

Coral frags. Bought, sold, fragged, learned.

Live frag listings & auctions from vetted reef breeders. Propagation techniques for SPS, LPS, and soft coral. Equipment guides curated from what our top-trust vendors actually use. Every frag ships with carrier-tracked Buyer Protection and a 4-hour DOA window.

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Live coral frags - shipping this week

Active inventory from approved vendors right now. Every listing includes the vendor's Trust Score and ships under the Fast Aquatics 4-hour DOA window.

Frag auctions

Time-limited auctions starting at $1. Anti-snipe extension (2 minutes added if a bid lands in the last 60 seconds), proxy bidding, hidden reserves, and IP / login-location tracking to block shill bidders. Full auction explainer →

SPS coral frags

Acropora, Montipora, Stylophora, Pocillopora. Frag genetics identical to the parent colony - the fastest way to start a Tank of the Month-tier reef without a $5,000 colony purchase.

LPS coral frags

Torch, hammer, frogspawn, chalice, Trachyphyllia, brain corals, acan colonies. Larger flesh per polyp and more visual movement than SPS - what most reefers buy first.

Soft coral & zoanthid frags

Zoanthids, palythoas, mushrooms, ricordea, leathers, GSP, xenia, gorgonians. Beginner-friendly, fast-growing, and where most named-cultivar drama lives (Utter Chaos zoa, Bizarro paly, Bounce Mushroom).

Named cultivars

Originator-fragged cultivars with documented lineage. Walt Disney Tenuis, Pink Lemonade Milli, ORA Pearlberry, JF Bird of Paradise, Reef Raft Krak, WWC Bounce, Cherry Corals OG. We catalog 1,500+ named cultivars - each cultivar page lists every active vendor with that frag for sale.

How to frag coral

The technique varies by coral type. SPS is bone-cutters and steady hands. LPS is a Dremel and patience. Soft coral is a scalpel and tank water. Below is the field-tested process across all three. For the deep version, see the full propagation guide.

SPS - the 7-step Acropora frag

LPS - cutting Euphyllia (torch, hammer, frogspawn)

Euphyllia frags depend on the species - branching Euphyllia (torch, frogspawn) is fragged at the branch joint with a Dremel + diamond wheel. Wall Euphyllia (some hammers, paraancora) is harder - cut through the skeletal wall between heads, working slowly to avoid splitting tissue.

• Torch / branching frogspawn: identify the natural branch split, Dremel through the skeletal junction, dab the cut, glue.
• Wall hammer: cut between heads through the calcified wall, leaving a buffer of skeleton on each side. Healing takes 4-6 weeks.
• Chalice (Echinophyllia): diamond band saw or Dremel cutting wheel, cut on a flat plane between encrusting growth ridges.
• Brain coral (Trachyphyllia, Wellso, Lobophyllia): single-polyp species - generally not fragged. Lobophyllia colonies can be cut between polyps.

Soft coral & zoanthids

• Zoanthids / palythoas: cut a small section of mat with a scalpel or razor blade, glue to a plug. Wear gloves + eye protection - palytoxin is lethal.
• Mushroom corals (Discosoma, Rhodactis): cut the disc radially through the mouth - both halves regenerate over 2-4 weeks.
• Ricordea: cut radially, glue both halves to plugs.
• Leather corals (Sarcophyton, Sinularia): take a 1-inch tip cutting, rubber-band or pin to live rock. Tissue toxin release - run carbon 48 hours after a frag session.
• GSP (green star polyps): peel the encrusting mat off the rock, glue to a fresh plug. Grows aggressively - rarely needs intentional fragging.

Read the full propagation guide →

Equipment for fragging coral

The shortlist of gear our top-trust vendors actually use. None of these companies pay us. Full directory of suppliers + reviews on the equipment page.

FAQ - coral frags

What is a coral frag?

A coral frag (short for fragment) is a small piece cut from a parent colony, glued to a plug or rock, and grown out as an independent colony. Frags are how reefkeepers propagate, share, and sell coral - one parent can produce hundreds of frags over its lifetime, and the genetics are identical to the parent.

How do I dip a frag before adding it to my display?

Bayer Advanced Insect & Disease (the version with imidacloprid) for 5-10 min, then a clean RO/DI rinse, is the gold standard. Alternatives: Coral Rx (gentler, works on a wider range of pests), Reef Primer (TLF), or Polyplab Reef Primer. Always rinse after the dip - residual dip in your display tank kills inverts.

How long does a coral frag take to encrust the plug?

SPS: 2-4 weeks for full encrustation under medium PAR. LPS: 4-8 weeks. Zoanthids: spread across the plug in 6-12 weeks. Healing time depends on tank stability more than coral type - param swings stall encrustation.

What's the difference between a WYSIWYG frag and a generic frag?

WYSIWYG = What You See Is What You Get. The exact frag in the photo is what ships. Generic frags are sold from stock and a representative photo - the actual frag is similar but not identical. WYSIWYG carries a price premium and reduces "I expected something nicer" complaints.

What if my frag arrives DOA?

Every Fast Aquatics order includes the 4-hour DOA window. Within 4 hours of carrier-reported delivery, submit three photos (sealed bag with the specimen, closeup of the specimen, label visible on the box) through the claim form. Approved claims pay full refund or replacement on the next available shipment.