Which Aquarium Fish Are Growing Fastest in Popularity?
On FishyHub's US marketplace, activity is rising in every livestock category it tracks, so the data cannot single out one fastest-growing fish. What it shows is where growth is concentrated: reef corals and marine display fish, cichlids and discus, and halfmoon plakat bettas, which sit in the very high buyer-interest tier. These are the areas where US sellers are building the deepest ranges and where shopper attention is strongest.
Key Findings
- FishyHub data shows new US listings rising in every livestock category with enough activity to measure, a pattern typical of a marketplace in its early growth.
- FishyHub data shows SPS corals, LPS hard corals and polyps have very high supply in the US, making reef corals a center of US marketplace growth.
- FishyHub marketplace activity shows the US marine fish range is deepest in butterflyfish, clownfish, gobies, tangs and wrasses, all with rising activity.
- On the freshwater side, FishyHub data shows growth in the US is concentrated in cichlids: American cichlids, discus and the wider cichlid group are all deeply listed and rising.
- FishyHub data shows halfmoon plakat bettas combine rising activity with very high buyer interest in the US, the clearest combined popularity signal in FishyHub's US data.
- FishyHub data shows collector freshwater fish such as black and jardini arowanas and datnoids are rising in the US from a limited base of listings.
- FishyHub data shows freshwater livestock still holds the larger share of US listings, even as marine categories grow.
Why Every US Category Is Rising
FishyHub measures momentum by comparing new listings and orders in the recent year with the year before. In a mature market, that comparison sorts categories into rising, steady and cooling. FishyHub's US marketplace is new, so nearly everything is growing at once as merchants join and list their stock. Rising momentum across the board is therefore a sign of the marketplace growing, not proof that every fish is becoming more popular with American keepers.
To find the real signals, this page looks at where growth is deepest (supply tiers), where shoppers are paying attention (buyer interest and searches), and what general hobby trends explain the pattern.
Reef Keeping: The Deepest Growth
The most striking feature of FishyHub's US data is the depth of the reef range:
| Group | US supply | US price tier |
|---|---|---|
| LPS hard corals | Very high | Collector / premium |
| Mushroom corals | High | Upper mid-range |
| Polyps | Very high | Upper mid-range |
| Soft corals | High | Upper mid-range |
| SPS corals | Very high | Upper mid-range |
| Tridacna clams | High | Upper mid-range |
All are rising. Several hobby trends lie behind this:
- Aquacultured coral. Most corals sold in the US hobby today are fragged from captive colonies rather than collected from the wild. Hobbyists and small coral farms can grow and list frags at home, so supply expands quickly.
- Better equipment. Modern LED lighting, controllable pumps and all-in-one tanks have made reef keeping more approachable for newcomers.
- Collecting culture. Named coral morphs with distinctive colors trade among collectors much like rare plants, which explains why LPS corals sit in the collector / premium tier with a wide price spread.
Marine fish
Among marine fish, butterflyfish, clownfish, gobies, tangs and wrasses have very high supply in the US, and anthias, blennies, dwarf angelfish, eels and large marine angelfish have high supply. Captive-bred clownfish, gobies and blennies suit new reef tanks, while tangs and dwarf angelfish are the display fish keepers add once a system is established. Designer clownfish, with their very wide price spread, show how captive breeding is turning even a familiar fish into a collectable.
Cichlids and Discus
On the freshwater side, cichlids stand out. FishyHub lists American cichlids, discus and a wide mix of other cichlids in depth in the US, each with rising activity, and African cichlids, angelfish and bichirs have high supply. Cichlids have a long history in American fishkeeping, and hard tap water in much of the country suits many African and Central American species. Discus in the upper mid-range tier with a narrow price spread suggest a well-established, competitive seller base.
Bettas: Interest and Growth Together
Bettas are where FishyHub can show both growth and attention in the US:
| Betta variety | Momentum | Buyer interest |
|---|---|---|
| Giant halfmoon plakat | Rising | Moderate |
| Halfmoon | Rising | High |
| Halfmoon plakat | Rising | Very high |
The halfmoon plakat is the clearest popularity story in FishyHub's US data. It brings show-style finnage to a sturdier, shorter-finned fish, and in the US it sits in the mid-range price tier. Interest is running ahead of supply. Giant halfmoon plakats are growing too, but listings are limited and they remain a specialist fish.
Collector Fish on the Rise
Several collector-tier freshwater fish are rising in the US from a limited base:
- Black arowanas
- Datnoids
- Jardini arowanas
These large, long-lived predators appeal to keepers with big tanks. Because Asian arowanas cannot legally be imported into the US, American arowana keepers focus on South American and Australian species. Monster fish as a category sits in the collector / premium tier in the US with moderate supply.
What US Shoppers Search For
FishyHub's search data, which combines its US and Singapore markets, shows which fish draw the most searches. The very high search tier includes arowana, betta, bichir, channa, discus, eel, flowerhorn, gar, guppy, oscar, pleco and tetra, among others. Terms such as "axolotl", "isopod", "jellyfish", "opae ula" and "pea puffer" sit in the high tier, pointing to growing curiosity about unusual and nano-scale animals.
Freshwater Still Leads
Despite the growth in reef categories, freshwater livestock holds the larger share of US listings on FishyHub. Freshwater fish remain cheaper to keep, easier for beginners, and available across every delivery zone - Midwest & Central, East Coast & Northeast, South & Southeast, West Coast & Mountain West, and Alaska, Hawaii & territories.
Methodology
This page is based on FishyHub's US marketplace activity over the period from October 2024 to October 2026. We compared new listings in the recent year with the year before, and looked at active listings, price tiers, wishlists, likes and "my tank" saves, search terms and the split between freshwater and marine livestock. All findings are reported as tiers and directions, not figures.
Because the US marketplace is new, momentum is rising across categories and does not separate one fastest-growing fish from another. US buyer-interest data covers betta varieties only, the US market has no order history in this data, and search terms combine FishyHub's US and Singapore markets. FishyHub does not report growth by state or zone.
Frequently Asked Questions
What aquarium fish is growing fastest in popularity in the US?
FishyHub's US activity is rising in every category, so no single fish stands apart on momentum. Halfmoon plakat bettas combine rising activity with very high buyer interest.
Is reef keeping growing in the US?
FishyHub data shows SPS corals, LPS hard corals and polyps have very high US supply and rising activity, and marine fish such as clownfish and tangs are rising too.
Are cichlids still popular in the US?
Yes. On FishyHub, American cichlids, discus and other cichlids have very high US supply and rising activity.
Which unusual aquatic pets are trending?
On FishyHub, searches for axolotls, isopods, jellyfish, opae ula shrimp and pea puffers sit in the high search tier, across its US and Singapore markets.
How to Cite This Page
Source: FishyHub, "Which Aquarium Fish Are Growing Fastest in Popularity?" (2026), https://fishyhub.com/us/blogs/blog-detail/which-aquarium-fish-are-growing-fastest-in-popularity
