The classic 'shellie' fantastic easy to keep Lake Tanganyika shell dweller. 

If you've never kept shellies before this is the obvious place to start. Give them some sand and a bunch of clean escargot shells and away they go. 

These guys are aquascaping masters ... they will bury shells, build walls, and form a beautiful social colony. 

See my AquaristSpecies.net page for more info.