Propagating Montipora undata (Undata Montipora)

Propagation guide for plating Montipora undata: cutting flat chips with a band saw, gluing to plugs, recovery conditions, and the Montipora-eating nudibranch warning.

Overview

Montipora undata is a plating coral of the family Acroporidae whose surface bears raised, undulating ridges. Montipora is the second most species-rich coral genus and is common across the Red Sea, western Indian Ocean and southern Pacific while absent from the Atlantic. Colonies depend on symbiotic zooxanthellae for the bulk of their energy.

Reproductive Mode

Montipora reproduce sexually as hermaphroditic broadcast spawners, typically in spring. In the home reef the practical route to more colonies is asexual fragmentation.

Fragging / Asexual Propagation

The ridged plate cuts cleanly with a band saw; coral cutters serve for smaller fragments. Cut through bare skeleton where possible and keep chips flat for an easy bond to the plug.

1. Divide the ridged plate into flat chips with a band saw or coral cutters.
2. Place cyanoacrylate glue, sized to the chip base, on a plug or disc.
3. Set the chip, hold around 30 seconds, then return it to the tank.
4. Return fragged colonies to good flow and light within a few hours.

Conditions for Propagation

Consistent alkalinity, calcium and magnesium drive healthy regrowth. The Aquairi record targets medium-high light (about 150-250 PAR), medium-high flow and 24-26 C.

Common Challenges

Montipora is preyed upon by corallivores and by a cryptic, undescribed Phestilla nudibranch. Quarantine and dip new frags to keep this pest out of the display.