Potomac Valley Aquarium Society

Potomac Valley Aquarium Society The Potomac Valley Aquarium Society is a not-for-profit educational and social organization for the PVAS meets the first Saturday of the month from 1 - 5 pm at the Green Acres Center in Fairfax, VA.

Exceptions are the Spring and Fall All-Day Auctions in April and October which are held on Sundays, and the July Bowl Show which is held the second Saturday.

Operating as usual
All-Aquarium Catfish Convention

Announcing the 9th All-Aquarium Catfish Convention where freshwater aquarium catfish enthusiasts and tropical fish hobbyists come together to socialize, learn, share information, and exchange catfishes from all over the world.


Rhinogobius sp red lip belongs to a group of similar looking gobies found in China. From the different creeks some will have red lips, some will have yellow or orange and some running down the face. We currently have some very healthy red lip varieties. They are a dwarf specie that max size at 2”. Generally peaceful with other fish.

Keystone clash schedule.

Keystone clash schedule.

From our friends up North.

From our friends up North.


SHRIMP KEEPING… DOWN THE RABBIT HOLE. A discussion with Mr. Jacob Waters about freshwater aquarium SHRIMP!!

Jacob Waters’ Bio:
I started off in the saltwater world 20 years ago breeding clownfish and at one point had over 3000 cumulative gallons of saltwater aquariums up and running but got out of the hobby do to lack of time.

I got back into the hobby about 3 years ago when my 4 year old son saw a betta fish at the pet store and started to beg to have one as a pet. So we got one with a small self cleaning tank and about a month later after some research I found that it really needed a larger tank to thrive so picked up a small 2.5 gallon tank with a sponge filter and air pump.

The following week I found the club PVAS and went to my first meeting where I met Frank and ended up buying a bag of cherry shrimp and fell in love with the critters.

Fast forward to today and I now have over a dozen shrimp only tanks between home and work with many rare species and have myself specializing in the harder to keep Caridina. I am focusing on fancy tigers and Boa shrimp at the moment but also getting into the highly coveted Nanashi lines as well. I have made friends with some of the most well known breeders in the world and am doing all that I can to help grow the hobby of shrimp keeping.

SATURDAY SEPTEMBER 24, 2022 at LOGO ADVANTAGE in Mechanicsville Virginia at 1:00 pm. Mini Auction after the shrimp talk. See our website for details.

#rva #richmondvirginia #rvapets #rvaevents #rvaaquariumhobby #rvalife #rvaplants #virginiaevents #virginiaaquariumhobby #aquariumclub #fishclub #aquariumsociety #aquariumhobby #fishkeepinghobby #aquarist #fishkeeping #petshrimp #neocaridinashrimp #shrimpkeeping #shrimpkeeper


𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 𝑠𝑝. "Redhead Tapajós" is finally described as a new species - 𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 𝑝𝑦𝑟𝑜𝑐𝑒𝑝ℎ𝑎𝑙𝑢𝑠 (thank you Logan Holfelder). Hailing from the Tapajós River basin, Brazil, this species of eartheater cichlid is popular in the hobby and was first imported in 1991 by German aquarists Christoph Seidel and Rainer Harnoss.

Paywall -

𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵 𝗧𝗶𝘁𝗹𝗲
A new species of 𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 (Teleostei: Cichlidae): naming a cichlid species widely known in the Aquarium hobby as “𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 𝑠𝑝. Tapajos Red head”

Chuctaya, J., Nitschke, P., Andrade, M.C., Wingert, J. and Malabarba, L.R. (2022), A new species of 𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 (Teleostei: Cichlidae): naming a cichlid species widely known in the Aquarium hobby as “𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 𝑠𝑝. Tapajos Red head”. J Fish Biol. Accepted Author Manuscript.

A new species of 𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 𝑠𝑒𝑛𝑠𝑢 𝑠𝑡𝑟𝑖𝑐𝑡𝑜 is described from the Tapajos River basin, Brazil, elevating the number of species of the genus to 21.

The new species is of commercial importance and is known in the aquarist trade as 𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 “red head”. The new species is diagnosed using an integrative approach, based on mitochondrial DNA analysis along with morphological evidence.

The new species is distinguished from all congeners by the absence of markings on head, the bar pattern composed by nine vertical bars on flanks, and the presence of distinct longitudinal bands in the caudal fin.

Additionally, it shows a genetic distance of at least 2.0% in cytochrome-b gene sequences from its closest congeners. Molecular analysis including most genera of Cichlidae from South America corroborates that the new species belongs to the group of 𝐺𝑒𝑜𝑝ℎ𝑎𝑔𝑢𝑠 𝑠𝑒𝑛𝑠𝑢 𝑠𝑡𝑟𝑖𝑐𝑡𝑜.

The name 𝑝𝑦𝑟𝑜𝑐𝑒𝑝ℎ𝑎𝑙𝑢𝑠 combines the Ancient Greek 𝑝𝑢𝑟𝑟ℎ𝑜𝑠 meaning "flame-coloured" or "red" and -𝑘𝑒𝑝ℎ𝑎𝑙𝑜𝑠 meaning "-headed".

#NewSpeciesAlert #NewFishSpecies #NewSpecies #Taxonomy #Ichthyology #Biodiversity #Cichlid #Cichlids #Cichlidae #Geophagus #Eartheater #JFB #Geophagini #Eartheater #Eartheaters
How to make an aquascape fish tank

While aquascaping has been around a very long time, it’s during the last couple of years that the art of underwater gardening has really taken off. By working in a small space, namely a fish tank, it’s a great way to add greenery to your life without needing a backyard, or even a courtyard.

Our speaker today brought the supplies he uses for breeding fish.

Our speaker today brought the supplies he uses for breeding fish.

Private Tour of Amazonia Exhibit Life Support Systems National Zoo | Potomac Valley Aquar

Hi Members, Nick Little has offered to give a private tour of the Amazonia Exhibit life support systems at the National Zoo. If you haven't visited Amazonia before, you will be amazed to see the huge and graceful stingrays flitting about the tree roots and gigantic Arapaima swimming in a floor to ce



4401 Sideburn Rd
Fairfax, VA

Opening Hours

1pm - 4:30pm


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Our Story

The Potomac Valley Aquarium Society was founded in 1960 for the purpose of furthering the aquarium hobby by the dissemination of information and advice, and the promotion of good fellowship among the members by organized activities and competitions.

Our club meets every month the first Saturday of the month except for the Spring and Fall All-Day Auctions which fall on Sunday. Sometimes the dates, like the July Bowl Show, are pushed to avoid a holiday so always check the Program.

Meetings are free and open to the public. People who attend more than one or two meetings per year are asked to join the club. The annual membership fee for individuals is only $20/year and helps us pay for the meeting room.

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THANK YOU PVAS for your hospitality and friendliness over the weekend, and for the opportunity to present at your legendary club! So looking forward to seeing you all again at CatCon this Autumn! - Ted Coletti
See web site for all details. Hope you can join us.
Hi, PVAS! Looking forward to my trip down to Fairfax to speak at your renown club! - I am donating a signed copy of my book for your door prize, and some bagged tub pond plants for your auction. - I will bring a limited number of copies of my book for purchase (cash only) and happy to sign any. You can also purchase in advance on Amazon below. - any recs on aquarium shops along the way from Bucks County, PA? I will be traveling mostly I-95 then I-495. Your hospitality has been most commendable and looking forward to meeting as many of you as I can! Dr. Ted
Anyone looking to rehome some oscars or plecos? I have some for free rehoming as well.
Check out this crazy aquarium someone is selling! Idk if I'd trust that.
Can someone tell me the date for the October Fish Tailgate please?
2021 Keystone Clash convention and aquarium fish show event. Held on September 24-26 2021 at the Morgantown PA Holiday Inn. For those new to the event, this is an annual event that happens each fall, roughly in the south east portion of Pennsylvania. Aquarium fish keepers, hobbyists, presenters, and vendors all congregate on this event weekend in order to celebrate aquarium keeping, excellence in husbandry, and of course the fish themselves! Viewing of the fish show, vendor area, and live fish auction is open to the public for free. (We are not responsible for how much you spend in the auction though) Paid registrants to this event get access to even more goodies. A whole host of renowned aquarium hobby speakers will be brought in for the event and registrants will be able to attend a multitude of presentations of varied topics within the aquarium hobby. You must also register in order to enter fish (Fish show entries are now closed. No walk-in entries allowed) into the competition itself and participate in the many raffles (thank you to our sponsors!!!) and to enter your children into the "Give A Kid A Tank" contest. Some sponsor donations are saved for your registrant goodie bags as well 🙂 More perks may be announced as well, join the Keystone Clash Facebook Group and follow the Keystone Clash page in order to get the latest and greatest Clash event updates - including speaker announcements Be sure to register properly through the website when registration opens for this event. Some items, such as limited edition Keystone Clash t-shirts and merchandise may run out if we get too many last-minute registrations. All aquariums are pre-set up prior to the event, so there will be no space for fish-entry walk-ins. Pre-register of fsh is closed now. Re:Covid and will announce any changes to the event if they occur. Safety will be our top priority, so please be prepared to comply with any local Covid safety mandates such as face masks or occupancy restrictions.
Register now at
Moving and rehoming a 120g planted Walstad aquarium. Seeking experienced aquarist and preferably someone with RO as that is what the system is used to. Hand raised these angels and love them dearly. Currently located in Falls Church. Send me a message!
CCA Club May Meeting is here!!! Link to join in will be open at 1:40pm for all CCA paid and non paying members. Topic: CCA May 8, 2021 - Zoom Invite: Topic: " Small and unusual freshwater fish: How to care for and succeed with delicate and specialized animals in aquaria" Time: May 8, 2021 2:00 PM Eastern Time (US and Canada) Speaker's Bio: Heather Burke is a 28-year-old aquarist from Charlotte, Michigan. She has kept and bred fish for most of her young life and harbors a keen interest and passion for the aquarium hobby. She has been active in aquarium societies since the age of 14 and has witnessed some 50 spawns of freshwater fish and invertebrates spanning two clubs. Her interests in fish are broad and range from nano species of cyprinids to wild-type livebearing fishes and dwarf cichlids. She obtained a degree in Fisheries and Wildlife at Michigan State University in May of 2016. She has previously been employed with Preuss Pets in Lansing and worked for the University of Michigan as a fishroom tech for a zebra danio lab. Heather currently works in the budding aquatics department at Josh's Frogs, an online pet retailer. Join Zoom Meeting Meeting ID: 993 0099 5685 Passcode: 405783 One tap mobile +13017158592,,99300995685#,,,,*405783# US (Washington DC) +16465588656,,99300995685#,,,,*405783# US (New York) Dial by your location +1 301 715 8592 US (Washington DC) +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 253 215 8782 US (Tacoma) +1 346 248 7799 US (Houston) +1 669 900 9128 US (San Jose) Meeting ID: 993 0099 5685 Passcode: 405783 Find your local number: