Fourspine Stickleback Apeltes quadracus (Mitchill, 1815)  

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A Fourspine Stickleback in Calvert Co., Maryland (6/8/2019). Photo by Ben Springer. (MBP list)

A Fourspine Stickleback in Somerset Co., Maryland (8/28/2017). Photo by Robert Aguilar, SERC. (MBP list)

A Fourspine Stickleback caught in Somerset Co., Maryland (6/13/2012). Photo by Robert Aguilar, SERC. (MBP list)

A Fourspine Stickleback caught in Anne Arundel Co., Maryland (6/23/2014). Photo by Robert Aguilar, SERC. (MBP list)

A Fourspine Stickleback in Queen Anne's Co., Maryland (2/8/2019). Photo by Daniel Irons. (MBP list)

A Fourspine Stickleback in Queen Anne's Co., Maryland (1/29/2019). Photo by Daniel Irons. (MBP list)


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