There’s something undeniably soothing about watching colorful fish glide through water. For many older adults, setting up a small home aquarium offers both a beautiful visual escape and a low-maintenance pet option. But while fishkeeping seems simple, there’s a bit of science behind the serenity.
To get expert guidance, we spoke with Sam, owner of Petqua, a beloved local pet store in New York City that has helped generations of families bring aquatic life into their homes. With over 30 years in the business, Sam has seen every fishy mistake and knows just how to help beginners start off on the right fin.
The Easiest Fish for Beginners? Betta and Goldfish Win
“For someone who doesn’t have experience keeping live fish, I always recommend a betta fish or a goldfish,” Sam shares. “These two breeds are hardy and adaptable. They can do well even in a simple, non-filtered aquarium.” That said, he’s quick to note that while bettas and goldfish can survive without a filter, “they’ll be much happier and healthier in a filtered tank and it makes life easier for the owner, too.”
Bettas are known for their vivid colors and elegant fins, while goldfish offer a friendly personality and long lifespan when cared for properly. Both can thrive with the right setup, making them ideal for older adults, first-time pet owners, or even grandparents who want a calming pet they can enjoy with visiting grandkids.
What You Need Before You Bring Your Fish Home
Before choosing your fish, Sam emphasizes the importance of preparation. “We always recommend setting up the tank a few days in advance,” he says. “That includes filling it with treated water and adding the right conditioners.”
Those conditioners are crucial. “You need two: one that removes chlorine and another that neutralizes heavy metals,” Sam explains. These help create a safe and stable environment for your fish to breathe and thrive.
He also suggests that new owners bring in a small sample of their tank water to the store for a quick chemistry check. “We can test the water and make sure everything is balanced before you add your fish. That step can make all the difference.”
Here’s a quick checklist of essentials for beginners:
A properly sized tank (at least 5 gallons for bettas, 10+ for goldfish)
A water conditioner and biological starter
A filter system, even for small tanks
Gravel or substrate, plants, and hiding spots for enrichment
A thermometer to monitor water temperature
Fish food appropriate for your species
A basic aquarium test kit (or plan to bring water to your local shop like Petqua)
Mistakes First-Time Fish Owners Make And How to Avoid Them
The most common misstep Sam sees? Buying the fish and the tank at the same time. “People get excited and want to bring everything home in one go,” he says, “but the aquarium needs to be cycled and conditioned before adding fish.” Another frequent issue is overfeeding. “It’s natural to want to give them a lot of food, but overfeeding causes waste, which can quickly harm water quality.”
His best advice? Do your homework, and talk to a trusted expert before buying anything. “We’re always happy to answer questions and walk people through the process. It’s much easier to get it right from the start than to fix problems later.”
A Peaceful Pet with Lasting Joy
Starting a small aquarium is more than just a hobby, it’s a daily source of calm, beauty, and quiet routine. For those seeking a pet that’s easy to manage, a betta or goldfish might be the perfect match.
Just remember Sam’s golden rule: “Take your time. Set up your tank right. And never hesitate to ask for help.”
meet the expert
Petqua was founded by the man everyone simply calls Sam. With over 20 years in the pet industry, Sam has built more than just a store, he’s built a trusted neighborhood destination for animal lovers across New York City. Known for his warmth, deep knowledge, and honest advice, Sam brings his lifelong passion for animals to every conversation with a customer.
