Semi-aggressive?

[dlhirst]

Thanks rmalone. I didn't even know sps could sting I was thinking along the lines of growth aggressiveness. Glad I asked

Miz, all corals are members of the phylum Cnidaria - which basically means they have cnidocytes, or stinger cells. Just like their cousins - jellyfish and anemones. Some are more toxic than others. I think, in general, the agressiveness is a measure of both that toxicity and the physical reach that a coral may have.