Hi! I'm interested in getting some nerite snails to keep algae down in my tanks. Couple questions: 1) I've heard they eat algae only exclusively. Is this true? 2) This depends on the answer of 1, but would they eat snail jello? Anything you've gotten them to eat besides algae? 3) Are they compatible with mystery snails, bettas, loaches, and cichlids? 4) I like the ishimaki smooth nerites. Are these the same thing? 5) How many would you suggest per tank? 50 gallon: 1 mystery snail, 1 Orange-finned loach, in the future 2 or more rainbow cichlids 10 gallon: 1 mystery snail, betta 5 gallon: betta Their food supply will consist of algae growing in the tank naturally and if needed algae grown on rocks in tank water in the sun.