Otocinclus: Oto Catfish Care Guide ...
Otocinclus: Oto Catfish Care Guide & Species Profile

How big do dwarf gouramis get?

Dwarf gouramis get to be around 3.5 inches long when they mature.

As a general rule, one inch of fish requires at least a gallon of water to live comfortably, so you should factor in a fish’s adult size when determining how big of a tank you need and how many fish you can keep in it.