[en] The thermal alphas will accumulate in the center of the ignited thermonuclear plasma in the long pulse experiments. This accumulation increases the Z_eff leading to increased synchrotron losses and decreases the effective fuel density which reduces the power output. Also the ignited plasma is burn-unstable and its temperature is expected to increase above the design point until a stable equilibrium is reached at a higher temperature. This higher operating temperature is not expected to be beneficial. Thus we are faced with the dual problem of ash accumulation and thermonuclear burn instability in the steadily burning tokamak plasma. So some means of controlling them is desirable. Several control schemes for both problems have been proposed. But it is felt that we need alternatives with more desirable characteristics. In this paper, we explore the use of 'fishbones' as possible scheme that will achieve the dual purpose of ash and burn control. 3 refs