there are six of them, they range in size from 1.5" to 2.5" + there are no agressive fish in the tank with them, bolivian rams, apisto borelli, and agazzi,penguin tetras, discus, loricaria filamentosa (spelling) and ancistrus. any suggestions as to why they have become so shy/
the room is quite. the tank is 400 litres half very heavily planted (this is where they hide) 1/4 piled with drift wood and boulders and the other 1/4 silica sand.
