"Hirrus was wont to derive an income of twelve thousand sesterces from the buildings surrounding his fish ponds, all of which he spent for food for his fishes: and no wonder, for I remember that on one occasion he lent two thousand _murenae_ to Caesar[219] by weight (stipulating for their return in kind), so that his villa (which was not otherwise extraordinary) sold for four million sesterces on account of the stock of fish. "In sooth, the inland ponds of our farmer folk may well be called _dulcis_, and those other _amara_.[220] "A single fish pond suffices us simple folk, but those amateurs must have a series of them linked together: for as Pausias and other painters of his school have boxes with as many compartments as they have different coloured wax, so must they fain have as many ponds as they have different varieties of fish. "These fish are furthermore sacred, more sacred, indeed, than those fish which you, Varro, say you saw in Lydia, (at the same time that you saw the dancing isles)[221] which came to the shore, where the altar was erected for a sacrifice, in shoals at the sound of the Greek pipe, because no one ever ventured to molest them; so no cook has ever been known to have 'sauced' one of these fishes.[222] "When our friend Hortensius had those fish ponds at Baulii, which represented so large an investment, he was wont to send to Puteoli to buy the fish he served on his table, as I have often seen when I was visiting him. And it was not enough that his fishes did not supply his table, but he was at pains to supply theirs, taking greater precautions lest his mullets (_mulli_) should go hungry than I do for my mules in Rosea, and it was not at less cost that he supplied meat and drink to his stock than I do to mine. For I raise my asses, which bring such fancy prices, at the cost of one servant, a little barley and the water which springs from my land, while Hortensius must needs maintain a fleet of fishermen to keep him supplied with small fry to feed to his fish, or, when the sea runs high and such deep sea forage is cut off by a storm, and it is not possible even to draw live bait ashore in a net, he is fain to buy in the market for the delectation of the denizens of his ponds the very salt fish which is the food of the people." "Doubtless," said I, "Hortensius would prefer to have you take the carriage mules out of his stable than one of his barbel mules from the fish pond."