Signs that Allelopathy Might Be Agitating Your Inverts

Since corals and other sessile invertebrates are more or less stuck in place and can’t chase away competitors or run from predators, many of them—particularly among the soft corals—have evolved the tactic of exuding toxins into the water to prevent other inverts from encroaching and to discourage predation. As you can imagine, this “chemical warfare,” … [Read More]

The Hammer Coral: A Sizeable Stinger with Showpiece Potential

Several of the so-called large-polyp stony (LPS) corals offer the advantages of being very hardy, adaptable, and beautiful and, thus, make excellent reef aquarium candidates, even for relatively new reefkeepers. The hammer coral (Euphyllia ancora), however, I would characterize slightly differently. There’s no question this coral is gorgeous, but I would rate it as rather … [Read More]

5 Ways to Counteract Coral Combat in the Marine Aquarium

At a casual glance, corals would appear to be an inoffensive lot, generally espousing a “live-and-let-live” philosophy. After all, when you’re firmly affixed to the substrate, how much trouble can you really cause for your neighbors? Plenty, as it turns out! Corals and other sessile invertebrates may seem harmless, but they actually take aggression to … [Read More]