The Most Undersupplied Aquarium Fish in America
The most undersupplied aquarium fish on FishyHub's US marketplace is the giant halfmoon plakat betta: its supply is limited and demand clearly outpaces it. Standard halfmoon plakats also have demand ahead of supply, despite plenty of listings. Because the US marketplace is new and has no order history in this data, demand against supply can only be measured for these betta categories; for the rest, the best evidence of undersupply is fish that shoppers search for heavily but that have few US listings, such as arowana, oscars and fancy goldfish.
Key Findings
- FishyHub data shows giant halfmoon plakat bettas in the US combine limited supply with demand that clearly outpaces supply.
- FishyHub US data shows halfmoon plakat bettas draw very high buyer interest, with demand ahead of supply even though supply is high.
- FishyHub data shows halfmoon bettas in the US are balanced, with high buyer interest matched by high supply.
- FishyHub data shows arowana and oscars are among the most searched terms on FishyHub, yet both have limited supply on the US marketplace.
- FishyHub data shows puffers and gar are heavily searched on FishyHub while US supply for both is moderate.
- FishyHub data shows oranda and ryukin goldfish have limited US supply, even though goldfish as a whole are in the very high supply tier.
- FishyHub data shows activity is rising across nearly every US livestock category, so supply is growing, though not yet evenly.
Why the US Data Measures Demand Only for Bettas
FishyHub's demand-versus-supply signal compares buyer interest (wishlists, likes and "my tank" saves) and orders with active listings. The US marketplace is new, and orders are not yet part of this data. Buyer interest from US users is strong enough to read only for a few betta categories, so those are the only places where FishyHub can say plainly that demand outruns supply. The rest of this page combines US supply tiers with FishyHub search terms, which cover shoppers in both the US and Singapore, to point to likely gaps.
Bettas: The Measured Shortage
| Betta | US supply | Buyer interest | Demand vs supply | Price tier |
|---|---|---|---|---|
| Giant halfmoon plakat | Limited | Moderate | Demand clearly outpaces supply | Upper mid-range |
| Halfmoon | High | High | Balanced | Upper mid-range |
| Halfmoon plakat | High | Very high | Demand ahead of supply | Mid-range |
Halfmoon plakats have become a favorite with American betta keepers. Their short fins resist tearing and fin rot better than long-finned halfmoons, they are active swimmers, and they come in koi, galaxy and solid colors that photograph well. That combination of hardiness and looks explains why interest outruns even a high supply.
Giant halfmoon plakats are scarcer still. Most show-quality bettas sold in the US are bred in Southeast Asia and arrive through importers in periodic shipments. Giant lines take longer to grow out, and fewer are produced per batch, so they reach US sellers in small numbers.
Search Interest vs US Listings
Where shoppers search for a fish often but US listings are thin, undersupply is likely. Search terms combine both FishyHub markets, so these are signals rather than measurements.
| Fish | Search interest on FishyHub | US supply |
|---|---|---|
| Arowana | Very high | Limited |
| Gar | Very high | Moderate |
| Oscar | Very high | Limited |
| Puffer | Very high | Moderate (freshwater and marine) |
Arowana. Arowana sit in the collector price tier in the US. Asian arowana cannot generally be imported or sold under US endangered species rules, so American buyers rely on silver, black and Jardini arowana, and only silver arowana reaches moderate supply.
Oscars. Oscars are a classic American "pet fish" with big personalities, but they sit in the entry-level / budget tier and grow large. Overnight shipping often costs more than the fish, so few sellers list them online.
Puffers and gar. Both are searched heavily, especially by monster-fish and oddball keepers, yet supply is moderate. Freshwater puffers are often wild-caught, and gar need very large tanks, which narrows the pool of sellers.
Fancy goldfish. Goldfish searches are common, and goldfish as a category have very high US supply, but listings for oranda and ryukin varieties are limited.
Not Undersupplied: Missing for Other Reasons
Some heavily searched fish barely appear on the US marketplace for legal rather than supply reasons. Snakeheads (channa) are among the most searched terms on FishyHub, but they are listed as injurious wildlife under US federal law and cannot be traded. Freshwater stingrays and axolotls are searched often too, and both are restricted in some states. These gaps are not opportunities for sellers; they reflect what can legally be kept.
Why US Supply Lags Demand
- Shipping costs. Live fish travel overnight by courier in insulated boxes, often with heat or cold packs. That fixed cost discourages listing cheap or bulky fish.
- Seasonal holds. Many sellers pause shipping in extreme heat and cold, which cuts supply at the same time each year.
- Distance. FishyHub's five US delivery zones are Midwest & Central, East Coast & Northeast, South & Southeast, West Coast & Mountain West, and Alaska, Hawaii & territories. Remote zones cost more to reach, so sellers may limit where they ship scarce fish.
- Import dependence. Fancy bettas, giants and many oddballs depend on overseas breeders and importers, and supply comes in waves.
Where Supply Is Not the Problem
Many groups have very high US supply: catfish, discus, goldfish, plecos, shrimp, tetras and barbs in freshwater, and butterflyfish, clownfish, gobies, tangs and wrasse in marine, along with SPS corals, LPS corals and polyps. American buyers looking for these will find plenty of choice.
Methodology
This page uses FishyHub's US marketplace activity over the period from October 2024 to October 2026: active listings by category, listed price tiers, new listings over time, buyer interest from US users on US listings, and FishyHub search terms. Findings are reported as tiers and directions rather than figures.
The US marketplace has no order history in this data, so demand against supply is measured only for halfmoon, halfmoon plakat and giant halfmoon plakat bettas. Search terms combine the US and Singapore markets. FishyHub does not report state-by-state figures, and legal restrictions and shipping practices are described from general hobby knowledge, not FishyHub data.
Frequently Asked Questions
What aquarium fish are in short supply in the US?
On FishyHub, giant halfmoon plakat bettas show demand clearly outpacing limited supply, and halfmoon plakats show demand ahead of supply.
Why are giant betta fish hard to buy in America?
Giant halfmoon plakats are bred mainly in Southeast Asia, take longer to grow and arrive through importers in small numbers.
Why can't I find snakeheads for sale in the US?
Snakeheads are listed as injurious wildlife under US federal law, so they cannot be traded, even though they are heavily searched.
Is it hard to find an oscar fish online?
Yes. Oscars are heavily searched on FishyHub but have limited US supply, mainly because shipping a large, inexpensive fish is costly.
How to Cite This Page
Source: FishyHub, "The Most Undersupplied Aquarium Fish in America" (2026), https://fishyhub.com/us/blogs/blog-detail/the-most-undersupplied-aquarium-fish-in-america
