I have had an unidentified Pleco for @ 9 years. He is about 8" long. I put some raw shrimp in the tank for him last night, but he didn't appear to eat it, although my Tiger Barb enjoyed some...How long should I leave the shrimp in the tank?
try lightly steaming one see if it makes a difference. Yeah you lose some nutrients (not that much) but I have found all my fish, including my 3" pleco, eat shrimp much more aggressively when its been steamed, not sure why maybe the texture.