Feeding them

1. Tap the tub of food on the floor, next to the cloth.
2. Hold it over the tank and shake it side to side.
3. Flakes drop into the water and everything swims over to eat.
4. Food nobody eats sinks and turns into dirt, so don't tip in too much.

When one is poorly

1. Tap a creature. Its name comes up on the right, with Health and Hunger.
2. If it says Ill in red, it needs help.
3. Tap and hold it, then drag it out of the tank.
4. Hold it over the white box with the green plus, on the floor to the right.
5. The bar goes red, then yellow, then green. It takes five seconds.
6. Let go over the water to put it back.

A hungry creature falls ill much more easily, so keep them fed.