Hi, I bought 4 tiger shovelnose they are in a 150G setup the water parameters are perfect, temp is between 78-80f, I’ve had them for 4 days but I have not seen them eating they are 4 inches each
When mine was small it really only ate over night. Never ate in front of me until 8" or so. Also the fish are new and still adjusting. Dont worry, let them get comfortable and they will eat.