Reproductive medicine in koi (Cyprinus carpio)

Attempted surgical correction of single‐ and multiyear post‐ovulatory egg stasis in yellow and red Irish lords, Hemilepidotus jordani (Bean) and Hemilepidotus hemilepidotus (Tilesius)

“…Manual expression of retained eggs or induced expulsion by use of hormones has not been reliably effective (Hill, Baldwin, Graves, Leonard, Powell & Watson 2005). Surgical correction of egg stasis as soon as it occurs is considered the best treatment (Brown & Richards 1979; Lewbart 2002; Miller 2001; Stamper & Norton 2002). Preventive ovariectomy has been used as a strategic approach to the prevention of egg stasis (Brown 1982; Kizer & Novo 2003).…”