Potomac Valley Aquarium Society has a non-profit arm, The PVAS Foundation, Inc. a 501(c)(3). The foundation supports research related to tropical fish and rain forest tropical fish habitat preservation. Please support the The PVAS Foundation, Inc. by making your Amazon purchases through SmileAmazon.com. Link to the foundation of .5 percent of your purchase will be donated to the foundation at no additional cost to you. Thank you!