How to Frag - Coral Propagation

Conservation through Propagation for Aquarium Coral is Easy

May 26, 2008

Many reef aquarists "frag" their coral to produce multiple individual "children" from a single mother colony. Here's how to frag your own coral.

Coral propagation refers to the reproduction of coral and is often accomplished by marine aquarists through a process called fragmentation or, as it is commonly called, “fragging.”

Fragging coral is remarkably simple and is an activity in which many reef aquarists become involved. Fragging allows people to share “frags” of their corals with friends and other aquarists, while keeping the “mother colony.”

CONSERVATION

In terms of conservation, coral fragging, whether done by the amateur aquarist or the commercial coral farmer, promotes a sustainable hobby in which every wild collected coral can be “fragged” to produce many offspring. This sort of conservation through propagation is very popular amongst conservation-minded aquarists.

SET-UP

Corals are generally fragged out of the water, which should not pose a problem so long as the coral is returned to the water within 15 minutes and the air temperature is in the mid-70s Fahrenheit and not too dry (a humid environment is best). If you are fragging a coral with large polyps, gently wave your hand over the coral before removing it from the water so that the polyps retract. Major tissue damage can occur if you lift some corals with large polyps out of the water while the polyps are fully extended.

USE CORAL CUTTERS OR A CORAL SCALPEL

To propagate a coral by way of fragmentation, remove the coral to be fragged from the water and, using a pair of coral cutters (for stony corals) or a coral scalpel (for soft and leather corals), remove a piece of coral from the mother colony. Gently handling the coral should pose no significant damage to the polyps, but it is best to use gloves to protect yourself and the coral while fragging.

CRAZY GLUE GEL

Once you have removed the frag from the mother colony, you can return the mother colony to the water. Using the gel-type Crazy Glue, affix the frag to a rock or plug and return it to the water. In time, the frag will encrust the plug or rock.

TIPS AND TRICKS

It is important to never frag more than about 25-30% of a mother colony at one time.

It is best to dip both the mother colony and the new frag in a coral dip such as SeaChem Reef Dip or Two Little Fishies ReVive Coral Cleaner after fragging. This dip will help ward off bacteria, fungus, and protozoans. Some aquarists also use a vitamin C additive such as Kent Marine’s Marine C following propagation to aid in healing.

There is a lot more information out there on coral propagation techniques. The Book of Coral Propagation by Anthony Calfo and Aquarium Corals by Eric Borneman are both indispensible books for the serious fragger.

The copyright of the article How to Frag - Coral Propagation in Other Invertebrates is owned by Ret Talbot. Permission to republish How to Frag - Coral Propagation in print or online must be granted by the author in writing.