willroo
Fish Fanatic
What are the smallest algea eaters.
Corydoras cats are fairly small all their lives, no bigger than like 1-2 inches i think and they will eat the particles of food that drop in between the gravel, cant say 100% or not whether they will eat algae exclusively.
There are prolly some who are smaller yet tho, nature is a mysterious and wonderful thing!
Zen
Generally otos are the smallest, but they're sensitive and need to be in groups. Of course, there's always the best option of an algae scraper...
Otos prefer to be in groups. Before you decide on the type algae eater you want, you need to figure out what type algae you have.
If you do decide you want an algae eater, you may also want to consider algae eating shrimp.
Is your tank relatively new? Brown algae is quite common in new tanks. Otos do clean it up pretty well. If it is part of the new tank syndrome, it will most likely clear up on it's own.