Brackish water fish that can live in a strictly freshwater tank. They have a bottom fin that allows them to suction on to anything. Great for community tanks. They stay small so they don't take up any room.
I'm not so sure about keeping them in regular freshwater for long term health, it seems the commonly available Bumble Bee Goby benefits from having at least a small amount of marine salt in the tank. They also enjoy being in groups and having some cover / caves available. I keep a small group in a light brackish tank (usually around 1.005 or slightly less) that I have planted with java fern, a crinum calamistratum, jungle val, and a couple other species I'm trying to grow in light brackish. They are very tiny, I think about 1.5" is about there normal size. Picky eaters though, they prefer live or frozen food.
Great little fish, full of character. Originally had 7 , but due to an algaecide now 3 in a 55 gallon planted (slightly brackish). They battle for there own little areas of ground, mostly with themselves... I keep a roundtail betta in the tank and he tends to mess with their little caves of choice, but they stand thier ground and sometimes even scare him off. A very jerky swimmer, quick sudden movements seem to be its forte..
Even though they are small in size, they will eat anything that moves that will fit in thier mouth that decides to stroll too close..(they dont do pellets or flakes) this includes baby cherry shrimp And Fry.. and will try to make it fit if doesnt..
I keep them in a freshwater ten gallon; three of them. I ocassionally throw in some marine salt just so they feel comfortable, Since they some from areas where the salt amount is always changing i try to mimick that.
