Ferdenzi, Joe

Joe Ferdenzi has kept tropical fish for over four decades, and during this time has done extensive writing, breeding, showing, speaking, and judging.  His writing has been published locally and nationally. Joe was awarded the Author of the Year by the Federation of American Aquarium Societies in 1994 and in 1996.

Joe has had numerous successful “first-time-ever” breedings and is among the top breeders in his home club, the Greater City Aquarium Society (GCAS).  Showing his fish across the region, he has won an abundance of awards, trophies, and ribbons, which include many Best of Show and Reserve of Show.  He has traveled as far as Bermuda numerous times, to give presentations to the Bermuda Fry-Angle Aquarium Society.

Joe is a member of local and national aquarium clubs and organizations.  He served an unprecedented 19 years as President of GCAS, is a Life Member of both the American Killifish Association and the American Cichlid Association, a member of the Long Island Killifish Association, and both the ACA CARES and GCAS CARES Programs.

Currently maintaining 45 aquariums in his fishroom, from 125 to 1.5 gallons, Joe’s tanks house just about every type of fish imaginable. His present focus is on African and South American killies, Apistogramma species, and swordtails.  Joe’s favorite tank is his very special 100-gallon stainless steel tank from the '60s.

Aside from his many aquariums, Joe has an impressive collection of literature―his aquatic library being one of the largest in New York.  Some of the books date to the mid 1800s, as well as many recently published books.  Joe also collects antique aquarium memorabilia and is extremely knowledgeable on the history of the hobby, including the history of his home club, GCAS.


  • Killifish Demystified
  • An Abbreviated History of the Aquarium Hobby in America
  • History Program
  • Basic Marine Aquariums
  • Hobby History
  • Do-It-Yourself Aquarium Gadgets
  • Aquarium Hobby History
  • A History of the Hobby in America
  • The Greater City A.S.’s 90th!
  • My Fish Room & Adventures in Fishkeeping
  • Aquarium Gadgets and How to Build Them
  • Moderator: Ask the Experts
Speaker Type: 
Speaker Topics: 
DIY (Do It Yourself)
Fish Rooms, Professional Breeder Facilities
History and Hobby-Related Talks
Marine, Reef & Brackish
Other Non-Fish Species Talk

Past Speaking Events

Event Name Date
GCAS Meeting Wednesday, June 6, 2018 - 21:00
BASNY Meeting Friday, April 13, 2018 - 20:30
DAAS Meeting Friday, November 27, 2015 - 19:30
NJAS Meeting Thursday, June 20, 2013 - 20:30
TFCB Meeting Thursday, June 13, 2013 - 20:30
OVAS Meeting Tuesday, June 11, 2013 - 20:30
GCAS Meeting Wednesday, July 3, 2013 - 20:30
NJAS Meeting Thursday, June 20, 2013 - 20:30 to 23:30
GCAS Meeting Wednesday, March 1, 2017 - 20:30
LIAS Meeting Friday, March 21, 2014 - 20:30
GCAS Meeting Wednesday, March 5, 2014 - 20:30
NAS Meeting Thursday, May 21, 2015 - 20:30
GCAS Meeting Wednesday, November 4, 2015 - 20:00
TFSRI Meeting Wednesday, June 15, 2016 - 20:30
BAS Meeting Monday, June 20, 2016 - 20:30
JSAS Meeting Monday, May 8, 2017 - 19:30
NEC 2016 Convention - "60th Anniversary of the NEC" Friday, April 8, 2016 - 09:00 to Sunday, April 10, 2016 - 01:30