hi, i have a 3 foot tank and have done my fishless cycle. I have just added 6 rummy nose tetra and 6 black widow tetra. They seem to be doing fine and i was just wondering what other fish would get on with these. I would like some more colourful fish and also a plec and maybe an african dwarf frog, Any advice would be greatly appreciated. Also would you tell me how many of each fish i should buy. thanks, emma