Basically what the title says. I have a 20 long and it currently holds (no flaming please) a 4" TSN. It's a very temporary grow out for a friend. Believe me I wouldn't keep this thing, not to say I wouldn't like to if I could. Which leads me to think what should I put in it after? I've considered just making it a hospital/quarantine tank and haven't ruled that out just yet. Let me just say I won't consider a community tank or Convicts. It doesn't have to be a true monster but if anyone has any ideas of some kind of oddball that would be able to stay in this tank for at least 6 months to a year and eventually stay in a 75g, that could work however I'd rather just have something to stay in the 20.
CONVICTS!