about the seahorse
Re: about the seahorse
Fleeton mentioned pseudochromis earlier, it's worth noting that green wolf eels are indeed pseudochromids. What's the species of your trigger, by the way?
Re: about the seahorse
I wouldn't say dwarf angels are entirely reef-safe, but they've gotten a bad rep. My Flame Angel in the 24g doesn't bother coflakes or anything else. If you're up for trying an angel, consider a cherub - smaller, gorgeous, and they seem to leave coflakes alone more than other dwarfs.
Re: about the seahorse
I have a Humu Humu Trigger, a.k.a. Picclyasso Trigger, in my 20gal tank and I'm quite fond of him. I've been considering adding one to my bigger tank, and I think he could work out well. He's been a great addition to my smaller tank, and I've only had a few minor issues - he's been eyeing my shrimp lately, and the other day he nipped at an anemone, but it was more out of curiosity than aggression, I think. The anemone's tentacle was wiggling about on a rock, looking like a worm, so I can see why he might have been interested.