cf. generally sigma 18, sigma 19, sigma 20, sigma 21. For fish that a dragnet-man might catch, see web address 1 -- especially the second page therein, which shows one of the tunas (tunnies, see following note) mentioned in the epigram quoted next.
[1] Greek Anthology 6.33.1-2 (Maikios/Maecius/Maccius), a dedication by fishermen to Priapus; cf. Gow and Page (vol. I, 280-283; and vol. II, 313) and further extracts from this epigram at alpha 1032, alpha 4532, beta 597, pi 2275, rho 222, and phi 258. To trap generally large, pelagic fishes such as those in the tunny tribe (Thunnini; cf. Greek Anthology 6.33.3 at beta 597 and rho 222), ancient fishermen probably used a system of weighted nets attached from a pole (nowadays known as a madrague; cf. Faget and Sacchi, 10) set in deeper water. The fish were diverted into tighter and tighter corridors of netting (called pa/rodoi, passages, by-passes; cf. pi 686 and pi 687) until they were so closely confined that it was easy to spear them (cf. Thompson, 86; Gow and Page, vol. II, 313).
[2] Quotation unidentifiable (and irrelevant to the present headword, since sa/gos 'cloth' is unrelated to it). The dedicatee is not the early Roman King Numa/Noma (nu 456), whose name does not decline like this, but rather, it seems, a king of nomads (cf. nu 452, nu 452); one manuscript, indeed, has *noma/dwn, not *noma/di.