The name たしぎ (Tashigi, kanji 田鴫) is the Japanese name for the common snipe (Gallinago gallinago), a wading marsh-bird. Pairs with Kuina (水鶏 / クイナ = water rail), another wading / poorly-flying marsh bird. Both swordswomen are named after low-flying, marsh-bound birds.
The bird-name convention is the etymological tell of the shared archetype: Kuina = water rail (cannot fly far); Tashigi = snipe (zig-zag low flight pattern; in Japanese cultural register associated with grounded flight). The names mark them as a succession-pair the moment Tashigi appears.
The payoff
Earliest known caller
Japanese readers identified the snipe/water-rail flightless-bird pairing immediately on Ch. 96 release (2000) — bird-name etymology is on-the-surface for Japanese-language audiences. SBS Vol. 16 confirmed the etymology and added the bird-cannot-fly-yet thesis. English-language fan communities (early forum posts, OPwiki etymology sections) followed within a year via translator notes.
Why this matters
This is Oda’s shared-bird-name-as-succession-pairing name-encoding playbook — the dead character and the living character carry parallel bird-names to mark them as the same archetype slot across two characters. The technique:
Give the doomed/dead character a flightless-bird name (Kuina = water rail).
Introduce the successor much later (Tashigi, Ch. 96 — 91 chapters after Kuina’s death) with a parallel flightless-bird name.
Use visual-design twinning to confirm the structural-pairing on the page.
Let the successor gradually fulfill what the original couldn’t — the bird-cannot-fly-yet thesis is operationalized arc-by-arc.
Generalization: when two One Piece characters share a naming-convention class (both bird-named, both flower-named, both food-named), they are likely structurally-paired — either as succession (Kuina → Tashigi), counterpart (Vivi → Lily), or rivalry (Roger → Whitebeard). The Tashigi/Kuina case is the prototype for parallel-name-encoded succession.