Keane won gold last week.
Ellen Keane has finished fifth in the final of the SM9 200 metres individual medley on day 8 of the Paralympics in Tokyo.
Last week's gold medal winner set a time of 2 minutes 38.64 seconds, which was three seconds off the medals today.
Limerick's Roisin Ni Riain finished her Paralympics with a personal best in the SB13 100 metres breaststroke as she ended up in seventh place.
Earlier, Gary O'Reilly was fourth in the hand cycling H5 Time Trial final.
And Niamh McCarthy finished in fifth place in the F41 discus final, with a best throw of 28.94 metres.

Kildare Hurling Team vs Clare
Kildare Ladies Team vs Dublin
Protesters Outside FAI Headquarters Demand Ireland Boycott League Fixtures Against Israel
Around 23,000 American's Visited Ireland For Last Years College Football Classic in Dublin’s Aviva Stadium
Ireland's Ben Lynch Becomes First Irish Skier To Qualify For Winter Olympics Final
Friday Morning Sports Update
Big Night Ahead For Celtic In The Europa League
First Round Of Genesis Invitational Gets Underway Shortly, With McIlroy And Lowry In Action