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North America

Marine Aquarium Societies of North America (MASNA)

Alabama (AL)

Alabama Reefers
Mobile Bay Reef Keepers (MBRK)
North Alabama Reef Club (NARC)

Alaska (AK)

Alaska Frag Swap

Arizona (AZ)

Fish & Reef Aquarium Group (FRAG)

Arkansas (AR)

Northwest Arkansas Aquarium Society (Freshwater)
Keepers of the Reef
Razorback Reef Marine Aquarium Society (RRMAS)

California (CA)

Coast Club (Freshwater)
Sacramento Aquarium Society (Freshwater)
Silicon Valley Aquarium Society (Freshwater)
Southern California Marine Aquarium Society
Pacific Coast Cichlid Association (Freshwater)
Bay Area Reefers
Central Valley Reefers
Marine Aquarist Roundtable of Sacramento (MARS)
Marine Aquarium Society of Los Angeles County (MASLAC)
Marine Aquarium Society of Ventura County (MASVC)
Northern California Reef Club
San Diego Marine Aquarium Society (SDMAS)
San Francisco Aquarium Society
Southern California Nano-Reef Society
Southern California Reef Keepers (SCRK)

Colorado (CO)

Southern Colorado Marine Aquarium Society
The Colorado Aquarium Society (CAS) (Freshwater)

Connecticut (CT)

Connecticut Area Reef Society
Greater Hartford Aquarium Society

Delaware (DE)

The Delaware Reef Club
Delaware Valley Reef Club

District of Columbia (DC)

The Potomac Valley Aquarium Society (Freshwater)
Washington DC Area Marine Aquarist Society (WAMAS)

Florida (FL)

*Newest: Reef City (RCS)
Tampa Bay Aquarium Society (TBAS) (Freshwater)
Tampa Bay Reef Club
The Gold Coast Aquarium Society (Freshwater)
Brevard Area Reef Society
Florida Marine Aquarium Society (FMAS)
Florida Panhandle Reefkeepers (FPRS)
Gainesville Reef Club
Northeast Florida Marine Aquarium Society (NFMAS)
Orlando Reef Caretakers Association (ORCA)
Palm Beach Marine Aquarium Society (PBMAS)
Southwest Florida Marine Aquarium Society (SWFMAS)

Georgia (GA)

Atlanta Reef Club
Atlanta-Southeastern Marine Aquarium Society

Hawaii (HI)

Honolulu Aquarium Society

Idaho (ID)

Idaho Marine Aquarium Society (IMAS)

Illinois (IL)

Chicagoland Marine Aquarium Society
Central Illinois Marine Aquarists (CIMA)

Indiana (IN)

American Livebearer Association
Michiana Aquarium Society (Freshwater)
Fort Wayne Marine Aquarists Society (FWMAS)
Northwest Indiana Marine Aquarium Club
Indiana Marine Aquarium Society (INDMAS)
Circle City Aquarium Club (Freshwater)
Northern Indiana Marine Aquarium Society

Iowa (IA)

Eastern Iowa Aquarium Association (Freshwater)
Greater Iowa Reef Society

Kansas (KS)

Aquarium Society of Kansas/Heart of America Aquarium Society (Freshwater)
Salt City

Kentucky (KY)

Louisville Marine Aquarium Society
Kentucky Reef Society
Louisville Tropical Fish Fanciers (Freshwater)

Louisiana (LA)

NOLA Aquarium & Reptile Association (New Orleans)
Audubon Aquarium of the Americas (New Orleans)
Southeast Louisiana Aquarium Society (Freshwater/Saltwater)
Louisiana Reef Club
Louisiana Marine Aquarium Society

Maryland (MD)

The Potomac Valley Aquarium Society (Freshwater)
Chesapeake Marine Aquaria Society (CMAS)
Southern Maryland Marine Aquarium Society
Mason Dixon Reef Club (South Central PA & Northern MD)
Washington DC Area Marine Aquarist Society (WAMAS)

Massachusetts (MA)

Boston Aquarium Society (Freshwater)
Boston Reefers Society
Pioneer Valley Aquarium Society (PVAS) (Freshwater)

Michigan (MI)

Greater Detroit Aquarium Society
Motor City Aquarium Society (MCAS)
Michigan Cichlid Association
Michigan Killifish Association (MKA)
Grand Valley Aquarium Club (Freshwater)
Grand Rapids Marine Aquarium Society
Marinelife Aquarium Society of Michigan
Michigan Aquatic Plant Group (Freshwater)
Upper Peninsula of Michigan Marine Aquarium Society
Michigan Reefers
Mid-Michigan Marine Club
Uber Frags Coral Propagation / Reef Husbandry Society

Minnesota (MN)

Minnesota Aquarium Society (Freshwater)
Greater Minnesota Reef Society
Northern Minnesota Reef Club
Twin Cities Marine Aquarium Society

Mississippi (MS)

Mississippi Reef Club

Missouri (MO)

Missouri Aquarium Society (Freshwater)
Saltwater Enthusiast Association of Springfield
Saltwater Enthusiasts Association of St. Louis
St. Louis Area Saltwater Hobbyist

Montana (MT)

Northwest Montana Reef Club

Nevada (NV)

Las Vegas Valley Reefers

New Hampshire (NH)

The New Hampshire Aquarium Society (Freshwater)
New Hampshire Reef Club

New Jersey (NJ)

Jersey Shore Aquarium Society (Freshwater)
New Jersey Reefers Club
North Jersey Aquarium Society (Freshwater)

New Mexico (NM)

New Mexico Ocean Keepers (Freshwater and Marine)

New York (NY)

Brooklyn Aquarium Society (Saltwater/Reefs/Freshwater)
Greater City Aquarium Society (Freshwater)
Long Island Aquarium Society (LIAS) (Freshwater/Saltwater)
Long Island Reef Association (LIRA)
Nassau County Aquarium Society (Freshwater)
The Allegheny River Valley Aquarium Society (Freshwater)
Hudson Valley Reef Keepers
Manhattan Reefs
Upstate Reef Society

North Carolina (NC)

Reef Aquarium Society of Charlotte
Triangle Reef Aquarium Club
Hampton Roads Reef Club (serving Virginia and North Carolina)

Ohio (OH)

Coral Reef Alliance
Cleveland Aquarium Society (Freshwater)
Greater Cincinnati Aquarium Society (Freshwater)
Cincinnati Reefkeepers Society
Medina County Aquarium Society (Freshwater)
Cleveland Saltwater Enthusiast's Association (C-SEA)
SaltGeeks - Marine Aquarium Society of Ohio
Toledo Reef Aquarium Club
Western Ohio Reef Club
Fish Tank Fanatics - Tidewater Reefers

Oklahoma (OK)

Oklahoma Marine Aquarium Society

Oregon (OR)

Greater Portland Aquarium Society (Freshwater and Marine)
Pacific Northwest Marine Aquarium Society

Pennsylvania (PA)

Delaware County Aquarium Society (Freshwater)
Greater Pittsburgh Aquarium Society (Freshwater)
Delaware Valley Reef Club
Erie Reef Club
Mason Dixon Reef Club (South Central PA & Northern MD)
The Reefers Lounge - Mountain Valley Reef Club
North Central Pennsylvania Reef Aquarium Society
Pittsburgh Marine Aquarium Society Inc. PMASI
Bucks County Aquarium Society (Freshwater)

Puerto Rico (PR)

Aquarium Club of Puerto Rico

Rhode Island (RI)

Tropical Fish Society of Rhode Island (Freshwater)

South Carolina (SC)

Columbia Marine Aquarium Club
Myrtle Beach Reefers

South Dakota (SD)

Sioux Falls Area Aquarium Society

Tennessee (TN)

Eastern Tennessee Reef Club
Middle Tennessee Reef Club
North Tennessee Reef Club
West Tennessee Marine and Reef Aquarium Club

Texas (TX)

Dallas/Ft. Worth Marine Aquarium Society
The Houston Aquarium Society (Freshwater)
Austin Reef Club
Lubbock Reef Club
Marine Aquarists Association of South Texas (MAAST)
Marine Aquarium and Reef Society of Houston (MARSH)
Abilene Marine Aquarium Society
Dallas Marine Aquarium Society

Utah (UT)

Great Salt Lake Aquarium Society (Freshwater)
Wasatch Marine Aquarium Society
Utah Marine Aquarium Society

Vermont (VT)

Vermont Marine Aquarist

Virginia (VA)

Hampton Roads Reef Club (serving Virginia and North Carolina)
Richmond Reefers
Washington DC Area Marine Aquarist Society (WAMAS)
Chesapeake Marine Aquaria Society (CMAS)

Washington (WA)

Mid-Columbia Saltwater Aquarium Club
Greater Seattle Aquarium Society (Freshwater)
Pacific Northwest Marine Aquarium Society (PNWMAS)
Puget Sound Aquarium Society
Spokane Reef Society
Yakima Salt Water Club

Wisconsin (WI)

Green Bay Aquarium Society
La Crosse Area Reef Keepers (LARK)
Madison Area Reef Society (MARS)
Northern Wisconsin Reef Society
Wisconsin Reef Society

Australia

Canberra District Aquarium Society

Belgium

Exotica Roeselare vzw

Bermuda

Bermuda Fry-Angle Aquarium Society

Canada

Canadian Association of Aquarium Clubs (CAOAC)
Ottawa Valley Aquarium Society
Aquarium Society of Winnipeg
Kitchener Waterloo Aquarium Society
Calgary Aquarium Society
East Coast A.S.
London A.S.
Saskatoon A.S.
Regina A.S.
La Societe d' Aquariophilie de Montreal
Edmonton Aquarium Club
Vancouver Aquatic Hobbyist Club (VAHS)