I used to have some, but I fear they may have died because of not being tolerant to hard water (gH 13/14) long term. Each one needs at least 30x30cm of territory, buy one or 3+, in a duo one will be bullied. They love water changes, in that they will climb the glass above the tank water level to experience the flow of the new bucket water directly! Pretty good in a community, just ensure it has a good flow and is in the low 20s celcius for at least some of the year.