Well we had one of our larger loaches pass on this morning, don't have a clue as to why, he was fine yesterday and none of the loaches have shown any sign of sickness at all. But there he was dead
Clowns get much larger than 6 inches though, and they live a long time, so I certainly don't think it was old age. Clowns do have a habit of doing stupid stuff though, like getting stuck in places they shouldn't be, so you never know.
