1 October 0430hrs - one fish found dead in aquarium. Left. some but only little food on plant leaves). Put substantial amount of solid food in. 2 October Two fish dead now - both found floating or leaf at surface. Predation? (no fungus) Plenty of food left on plant leaves (food now molding). However, no liquid food had been put in since 0730 hrs. 30 Sept. Other fish seem healthy. Three snails found in aquarium (probably from eggs on plants). Removed. Fish increased in size, some(?) still small, but others quite large. Can tell sex of those approx 13cm long. As far as I can tell, of the four individuals I can sex, they are two males and two females. Planaria observations - one planaria is light tan and very large. Two others observed at what I believe to be sexual reproduction. One individual (while about 1/2" from the other) suddenly "crinkled" up and remained completely motionless. Meanwhile the other planaria was quite active and several second)