What is the smallest catfish?

[aewing]

I am looking for some small cats to patrol the bedding in my 55g. I have a columbian black fin and I think he may have to go soon. He is too rowdy for my other tankmates. I also have a cory but I want about 5 more that are 1" or less.

 

[toddnbecka]

As long as you don't mind them staying out of sight by day, Hara hara or a similar species (aka moth catfish) are quite small. Alternatively, what about dwarf or pygmy cory cats?

 

[jb-ny]

I just got some pygmy cory for my little girls tank none of them are over an inch.
I just got them last night but I can tell they will be the family favorite.

 

[cellodaisy]

You only have one cory? I believe they prefer to be in groups, so your best choice would be more corys. I could be wrong though---I haven't kept corys. Cory experts, please chime in.

 

[jackiomy]

You need groups! I have 5 peppers and they are the funniest. They school with my rasboras. LOL

 

[Hurley]

What kind of cory do you have already? They do like to be in groups so up the number of those before trying a different species. What other fish do you have in your tank already? In a 55 you could create a school with the cory you already have and even add another school of something like panda or pygmy cories, which stay small.