Son and I fished Brookville last Sunday (4th) in the morning. One small largemouth was the only thing between us and a skunk. Our only other notable catch was a very small diameter rope my son snagged and pulled in. On one section of the 15' rope we found what we think were zebra mussels, about 8 of the little critters. Assuming a correct ID, are zebra mussels common to Brookville? Any cause for alarm?