hi to all, im a new member to this forum,, just want to seek opinions and advices.two of my senegals are having red traces in their dropping,,.possibly blood

probably it was caused by me feeding them Superworms..
and worst, 1 of my senegals lost its appetite,, just this noon while cleaning the tank, red colored droppings..this time its all like blood traces in it.
is this a sign of a clog in the digestive tract?
please someone help me.
im so desperate right now about this.
shouldnt had fed them superworms