We are currently not offering order-to-ship merchandise. Be sure to check out our limited quantities at the 2023 PA AFS Spring Technical Meeting.

To pay for merchandise at the in-person conference:


New t-shirts and hats featuring the rainbow darter logo

Hats Sold Out


Stickers (specify type and quantity when ordering online)


Left: PA hydrology                         Right: Rainbow darter (Etheostoma caeruleum)



Previous batch of t-shirts and hats (a few hats remaining)