PROBLEM TO BE SOLVED: To provide a shellfish fastener for aquaculture in which resource saving and labor saving are enabled in a structure and molding, furthermore, the deformation, breakage and strain are eliminated in transport, storage and aquaculture on-site handling, furthermore, stable mounting is easy to a bus-line symmetrically, and it is suitable for the aquaculture of spats and its detachment is reduced, and thereby the debris of the shellfish fastener single body remaining in the bus-line is also reduced after the aquaculture.SOLUTION: A shellfish fastener has a shellfish holding part with a tip shellfish hole insertion section and a shellfish coming-off prevention section, a shellfish suspending part and a rope stopper part, sequentially in the center direction from the tip side of the base, at one end or both ends in the longitudinal direction of a resin-made bar-shaped long base. The rope stopper part is configured such that a pair of rope stopper projections having sufficient intervals for sandwiching the bus-line is installed in a central portion of the base at intervals sandwiching the rope starting from the base, respectively. The one rope stopper projection is installed while the tip section is inclined to the center side, and the other rope stopper projection is installed while being inclined or perpendicular to the center side.SELECTED DRAWING: Figure 1【課題】構造および成形において省資源、省力化ができて、しかも、輸送、保管、養殖現場の取り扱いにおいて、変形、破損、歪みが無く、しかも、母線へ左右対称に安定な取り付けが容易で、かつ稚貝の養殖に適し、脱離が非常に少なく、養殖後は母線に残る貝係止具単体の残骸が少ない養殖用貝係止具を提供する。【解決手段】樹脂製棒状の長尺根幹の長手方向の一端または両端に、根幹の先端側から中心方向に順次先端貝孔挿入部および貝抜け防止部を備えた貝保持用部位、貝吊り下げ部位、およびロープ止め部位を有する貝係止具において、そのロープ止め部位は、根幹の中央部分に母線を挟むに十分な間隔を持った一対のロープ止め突起が根幹を起点にしてロープを挟む間隔でそれぞれ設置されており、その一方のロープ止め突起はその先端部が中心側に傾斜した状態で設置され、他方のロープ止め突起は中心側に傾斜または垂直の状態で設置されている構造とする。【選択図】図１
