Three and counting.

I learned the numbers from one to ten. But I can't use them: if I want to tell I want three fishes at the marked, I cannot say I want 3 fishes. I must use a counter. Either one for cylindrical objects or one for animals (wonder whether there is a special one if they smell).
And there are other counters for flat objects: sheets, stamps, T-shirts, if neatly folded and not smelly. For mines I'll need the mackerel counter.