I have a tropical marine tank with an assortment of marine tropicals. I have this one rather gregarious 4 inch Koran Angelfish who spotted a rubber band on the bottom of the tank accidently left after I introduced a new fish. To my horror (the fish cost as much as a good spinning reel) the Koran ate the rubber band. I worried about it, expecting him to croak any minute, hour, or day. Three days later I saw the rubberband half way out of his vent. Couple of hours later it was on the bottom of the tank. And before I could fish it out, the Koran swallowed it again. Three days later it was again at the bottom of the tank and I removed it.

Somehow, I don't think any soft bodied objects will hurt steelhead. They'll just pass it.

Hey Sparkey, congrats, where'd you get the fish (email me).