For me, number one, a beautiful ghost eel. Reefsafe, they said. I was new and stupid. Ate 300.00 worth of fish before I could extract him---he found a new home back at the LFS.
Number two: a yellow dottyback. Talk about low cunning. One try at any method of removal and if it failed, he now knows it and won't fall for it twice. I had to remove all corals and most of the rock getting this fellow out. He was territorial to the max and this little fish had big damsels running scared. Back to the LFS.
Number three: a carpet anemone: loved my tank TOO much and took up 50 gallons of room on his lonesome. Traded off. Was also gray and not the prettiest nem. But thriving.
Number four: a mated pair of clarkii clowns. Terrorized the other damsels (including a neoglypt---blue velvet, which is one of the pushiest there is) and bit my hands bloody for some time---they never forgave me for moving the anemone. I traded them to the lfs breeding tank, where they were parents to many, many, many offspring.
Those are the outstanding ones: others that weren't a good idea: a mithrax crab that took divots out of my fish; a sally lightfoot that went back to the store when I found out how big they can grow (dinnerplate); and an arrow crab that disappeared, unmourned: they can strip your tank of useful worms; and a pistol shrimp (tiger) that did in his goby and several other fishes before I got him out.
Number two: a yellow dottyback. Talk about low cunning. One try at any method of removal and if it failed, he now knows it and won't fall for it twice. I had to remove all corals and most of the rock getting this fellow out. He was territorial to the max and this little fish had big damsels running scared. Back to the LFS.
Number three: a carpet anemone: loved my tank TOO much and took up 50 gallons of room on his lonesome. Traded off. Was also gray and not the prettiest nem. But thriving.
Number four: a mated pair of clarkii clowns. Terrorized the other damsels (including a neoglypt---blue velvet, which is one of the pushiest there is) and bit my hands bloody for some time---they never forgave me for moving the anemone. I traded them to the lfs breeding tank, where they were parents to many, many, many offspring.
Those are the outstanding ones: others that weren't a good idea: a mithrax crab that took divots out of my fish; a sally lightfoot that went back to the store when I found out how big they can grow (dinnerplate); and an arrow crab that disappeared, unmourned: they can strip your tank of useful worms; and a pistol shrimp (tiger) that did in his goby and several other fishes before I got him out.
