My mum is pondering having a tank, she likes the little one I have up for sale at the moment, 24"w x 14" deep x 20" high, roughly 100 odd litres (not much room in her flat). She would like interactive fish, something that will follow her finger up and down the tank and "wag". She likes acara shaped fish, but I think the blue acara I have are too big for this size tank. She has thankfully gone off the idea of an oscar after seeing the lodgers (expecially as I explained they will get bigger still ). She is not keen on angels, but likes severum's but again not suitable for this tank. I am completely stuck on what to suggest, oh and it has to be colourful but not too small