How Many Fish Do Americans Own? Surprising Stats Behind the Aquarium Hobby
Published by Caldera Haven – Crafted Calm, Delivered
America's Fish Population Rivals Dogs and Cats
According to industry reports, the U.S. freshwater fish population reached nearly 140 million in 2017. While fishkeeping households have declined slightly since then, the current 2025 estimate still exceeds 100 million fish across the country—more than the number of pet cats and dogs combined.
How Many Fish Are in the Average Home Tank?
Unlike dogs or cats, aquarists often keep multiple species. On average:
- Freshwater aquarium owners keep approximately 13 fish per household.
- Saltwater tank owners typically stock fewer fish, often between 2–6 fish, especially in reef tanks that prioritize corals and invertebrates.
This means a single tank can be a thriving micro-ecosystem—particularly if you choose a larger format like our JBJ 65-Gallon Rimless Aquarium.
How Big Are Home Aquariums?
A nationwide hobbyist survey revealed:
- 46% of respondents kept aquariums under 40 gallons.
- The remaining 54% used larger tanks, including 55, 75, or even custom aquascapes over 100 gallons.
Beginner tanks often start at 10–20 gallons, but as aquarists gain confidence, many upgrade to larger displays—like the 65-gallon flat panel aquarium from JBJ, ideal for freshwater and saltwater setups alike.
Breeding at Home: A Deepening Connection
One of the most surprising stats? 66.3% of fishkeepers have bred their fish at some point. From guppies and mollies to more exotic species like cichlids or clownfish, breeding often requires:
- Extra tanks or breeding boxes
- Special filtration and temperature control
- Knowledge of genetics and water parameters
This high percentage shows that fishkeeping isn’t just decorative—it’s a deeply engaging hobby that rewards patience and care.
Why It Matters for Aquarium Design
Understanding how many fish are typically kept—and how large your tank should be—is essential when planning your ideal setup. At Caldera Haven, we recommend starting with a larger tank when possible. Not only does it provide better water stability, but it also opens up creative aquascaping opportunities and reduces stress for fish.
“Bigger tanks mean better ecosystems—and a more serene centerpiece for your space.”
Craft Your Calm with Caldera Haven
Whether you're just starting or ready to upgrade to a luxury setup, explore the JBJ 65-Gallon Rimless Aquarium with White Stand—a modern statement piece built for clarity, beauty, and balance.
Ready to create your own vibrant underwater world? Shop all aquariums here.