The fish population of this lake primarily consists of Northern Pike, Bluegill and Largemouth Bass. Recent management efforts on Holland Lake have focused on attempting to establish a 2 story fishery that supports the periodic stocking of stream trout species. Brown Trout have been observed in previous surveys but none were captured during this survey. When present these fish are surplus brood stock culled from the state hatchery system and stocked in the fall to provide a put-and-take winter fishery. Northern Pike were sampled well above the median levels for abundance and at the median level for mean weight in 2013. The average size NOP captured was approximately 20.78 inches and 2.78 pounds. Bluegills were sampled in the highest abundance of any species during this survey. The trap net catch rate for Bluegill was the highest ever recorded for this lake, but the average size is small with only 23 individuals out of total of 397 (6%) larger than 6.0 inches in length being captured. Growth rates for Northern Pike and Bluegill were found to be below average when compared to statewide averages. Other panfish seen during this survey were Pumpkinseed and Hybrid Sunfish, each of which was also sampled in their highest abundance ever. These other panfish were found to be small in size and have poor to slow growth for lakes similar to Holland Lake. Six Largemouth Bass were observed in the sampling gear, these fish had an average length of 12.36 inches and an average weight of 1.42 lbs. Some other fish seen in during this survey were Black Crappie which were observed in low numbers and were of small size and Green Sunfish which were also not very numerous and small in size.
- Eurasian Watermilfoil
Recreational activities such as recreational boating, angling, waterfowl hunting, and diving may spread aquatic invasive species. Some aquatic invasive species can attach to boats, while others can become tangled on propellers, anchor lines, or boat trailers. Many species can survive in bilge water, ballast tanks, and motors or may hide in dirt or sand that clings to nets, buckets, anchors, and waders. Fortunately, completing simple steps can prevent the transport of aquatic invasive species.