Name that one fish that you totally regret getting...

ROFLMAO Zig..... Hoarked up a lung LMAO.... LOL LOL LOL LOL LOL
 
Albino cory catfish. Not really sure why I even got them in the first place. They're ugly, ugly and ugly. Put them in my tank and they were spastic 99% of the time, swimming from the bottom to the top of the water then right back down; scared the crap out of my tetras. And they're ugly.
 
Bloodfin Tetra

Bloodfin Tetra has showed up a number of times on this list and I've got to admit I had a similarly disappointing experience. Really aggressive and nippy toward each other, not at all peaceful and relaxing as I'd hoped. I now prefer White Cloud Minnows.
 
Swordtails! 1 male 2 females. I suspected they don't go along too well with each others, One female being territorial to other female. I woke up today and saw one of my darling angelfish having a bad fins.. Oh the Swordtails basically gobbled up food before it reach to my Angels and Kissing Gouramis...hrmppph
 
not fish, but fire belly toads. I wish I had known that they really don't do very much, although they seem to like their new wicked cool tank more.
 
Mollies! and my striped raphael cat. Just sits around and looks ugly
 
Mollies. They breed like rabbits and in my experience, they are always ill.
 
Two 6" featherfin synodontis off of craigslist. They looked cool and all but they loved to hide and the whole time I had them I was afraid they were gonna eat my smaller clown loaches. Got more money for them when I traded them in to an LPS then when I bought them.
 
My Common Pleco that started as a small 4" pleco for my 20G tank, but soon outgrew it at a size of 11". I then finally sold it.
 
AquariaCentral.com