A couple months ago I posted a question regarding why my platy fry might be pecking at my pleco. Someone suggested that maybe they were finding food on him. Well that batch of fry have been gone for about a month, but I have more now. These ones are about 1/2 inch in size and worse than the others. Thet are pecking at my pleco as well as my ID Sharks. Any other suggestions on why they are doing this?