There is very bizarre looking freshwater fish out there. I went to the pet store up the street to pick up some fish tank supplies. I saw this fish called a coolie loach, this thing looked like a snake! They said it was a bottom feeder and it would also help keep the glass clean because this fish also eats algae. It was weird looking, it had black and white stripes on it, practically no head, and a snout pointing downward. They also told me it was a very nervous fish, and would hide away in the rocks most of the time. If your looking to add some intrigue to your tank check one of them out.