Are Monster Fish Becoming More Popular? Search & Marketplace Data
Yes, on the evidence FishyHub has. Monster fish are among the most searched groups on the marketplace, and in the US every monster fish group FishyHub tracks, from arowana and datnoids to gar and bass, is rising in new listings. The US monster fish category sits in the collector / premium price tier, so this is a growing niche of committed keepers rather than a mass-market trend.
Key Findings
- FishyHub search data shows arowana, bichir, channa, flowerhorn, gar and oscar among the most searched terms across its markets, with "monster fish" itself searched often.
- FishyHub data shows the monster fish category is rising in the US and sits in the collector / premium price tier with a wide price spread.
- FishyHub data shows black and jardini arowana have limited supply in the US, sit in the collector / premium tier, and are rising in new listings.
- FishyHub data shows datnoids have limited supply in the US and sit in the collector / premium price tier.
- FishyHub data shows flowerhorn has high supply in the US, sits in the collector / premium tier and has a very wide price spread between varieties.
- FishyHub data shows bichirs have high supply in the US and sit in the mid-range price tier, making them one of the more accessible monster-style fish.
- FishyHub data shows oscars and knifefish have limited supply in the US and sit in the entry-level price tier.
What Counts as a Monster Fish
In the hobby, a "monster fish" is a species that grows large, often predatory, and needs a very big tank or indoor pond as an adult. FishyHub's monster fish category includes bass, datnoids, gar, knifefish and oscars, among others, and arowana, flowerhorn and bichirs are usually counted in the same circle even though FishyHub lists them separately.
The Search Picture
FishyHub's search data, which combines its Singapore and US markets, shows heavy interest in big fish. Grouped by tier and listed alphabetically:
- Very high: arowana, bichir, channa, eel, flowerhorn, gar, oscar, puffer
- High: bass, monster fish, snakehead, stingray, tiger
- Moderate: peacock bass, pike, red tail catfish, tiger fish
- Limited: arapaima, pacu, piranha
Search interest is broad and steady, and it includes fish that are hard or impossible to keep legally in much of the US, which is where the American picture diverges.
US Monster Fish on FishyHub
| Group | US supply | US price tier | US price spread |
|---|---|---|---|
| Arowana (category) | Limited | Collector / premium | Not reported |
| Bass | Moderate | Upper mid-range | Moderate |
| Bichirs | High | Mid-range | Moderate |
| Black arowana | Limited | Collector / premium | Not reported |
| Datnoids | Limited | Collector / premium | Moderate |
| Flowerhorn | High | Collector / premium | Very wide |
| Gar | Moderate | Mid-range | Narrow |
| Jardini arowana | Limited | Collector / premium | Not reported |
| Knifefish | Limited | Entry-level / budget | Wide |
| Oscars | Limited | Entry-level / budget | Narrow |
| Silver arowana | Moderate | Upper mid-range | Wide |
Every group in this table with a tracked trend is rising in new listings in the US.
Why the US Monster Fish Market Looks Different
Federal and state rules
Snakeheads (channa) are listed as injurious wildlife under US federal law, so they cannot be imported or moved between states, and they do not appear in FishyHub's US listings even though channa is one of the most searched terms on the marketplace. The Asian arowana is protected under endangered-species rules and cannot be brought into the US, which is why US arowana listings are silver, black and jardini types. Several states also restrict fish such as piranha and pacu. Anyone buying a large predatory fish should check their own state's rules first.
Premium pricing
Most US monster fish sit in the upper mid-range or collector tier. Large fish take longer to raise, ship in bigger boxes with more water, and are often wild-caught or bred by a small number of specialists. Datnoids and arowana in particular are slow-growing and admired for pattern and color, which keeps them in the collector tier.
Cheap fish, limited listings
Oscars and knifefish are the exception: limited supply and entry-level prices. A fish that sells cheaply but ships expensively is uneconomical to list online, so these remain mostly local fish store purchases.
Who Is Keeping Monster Fish in the US
FishyHub cannot measure how many Americans keep large fish. General hobby knowledge suggests the niche is strongest among keepers with space for very large tanks or indoor ponds, often in houses rather than apartments, and that warm southern states make outdoor ponds for some species easier. Shipping large fish is best done in mild weather; summer heat in the South & Southeast and winter cold in the Midwest & Central zone both add risk, and deliveries to Alaska, Hawaii & territories cost more.
Is Keeping Monster Fish Responsible?
Monster fish are long-lived, grow fast and are hard to rehome. The hobby's growing caution about "tank-busters" sits alongside rising listings, which fits a picture of fewer impulse buys and more planned purchases by experienced keepers. Never release any aquarium fish into the wild.
Methodology
This page is based on FishyHub's US marketplace activity over the period from October 2024 to October 2026: active listings by category, listed price tiers and price spreads, and new listings compared with the year before, together with search terms shoppers use on FishyHub. Findings are reported as tiers and directions, not figures.
Search terms combine FishyHub's Singapore and US markets. The US market has no order history in this data, and buyer interest is not reportable for monster fish groups in the US. FishyHub does not report state-by-state figures; comments on state rules and climate are general context, not FishyHub data.
Frequently Asked Questions
Are monster fish becoming more popular in the US?
FishyHub data shows every monster fish group it tracks in the US rising in new listings, and big fish are among the most searched terms on the marketplace.
What is the most expensive monster fish?
FishyHub does not rank fish, but in the US arowana, datnoids, flowerhorn and the monster fish category as a whole sit in the collector / premium price tier.
Can you buy a snakehead in the US?
Snakeheads are federally listed as injurious wildlife, so they cannot be imported or transported across state lines, and they are not part of FishyHub's US listings.
What is a good beginner monster fish?
Many keepers start with a bichir: on FishyHub in the US they are widely listed and mid-range priced, and they are hardy, though they still need a large tank.
How to Cite This Page
Source: FishyHub, "Are Monster Fish Becoming More Popular? Search & Marketplace Data" (2026), https://fishyhub.com/us/blogs/blog-detail/are-monster-fish-becoming-more-popular-search-marketplace-data
