Which fish & aquarium brands do AI assistants recommend in Vietnam? Q4 2026
In Vietnam, AI assistants most often recommend Tetra, Hikari and Sera for fish. Tetra is named by 5 of 5 assistants.
What the data says
Tetra (Spectrum Brands) is the fish & aquarium brand AI assistants recommend most in Vietnam, taking 31% of all recommendation points across 5 assistants. Hikari follows with 24.4% and Sera is third with 13.4%.
Tetra's lead over Hikari is 6.6 points, a clear advantage in how AI shortlists the category.
ChatGPT, Claude and Grok put Tetra first, while DeepSeek favours Sera and Gemini favours Hikari.
The top five brands hold 82% of recommendations out of 13 brands named in total, so AI answers in this category are highly concentrated.
| # | Brand | Owner | AI share | ChatGPT | Claude | DeepSeek | Gemini | Grok |
|---|---|---|---|---|---|---|---|---|
| 1 | Tetra | Spectrum Brands | 31% | 35 | 35 | 25 | 25 | 35 |
| 2 | Hikari | Kyorin | 24.4% | 25 | 25 | 12 | 35 | 25 |
| 3 | Sera | Sera GmbH | 13.4% | – | 12 | 35 | – | 20 |
| 4 | Ocean Free | Ocean Free | 8.8% | 12 | – | 20 | 12 | – |
| 5 | JBL | Harman | 4% | 20 | – | – | – | – |
| 6 | Sakura | Independent | 4% | – | – | – | 20 | – |
| 7 | Aqueon | Central Garden & Pet | 4% | – | 20 | – | – | – |
| 8 | API | Mars | 2.4% | – | – | – | – | 12 |
| 9 | Omega One | OmegaSea | 1.6% | – | – | – | – | 8 |
| 10 | XO | XO Pet Food | 1.6% | 8 | – | – | – | – |
| 11 | UP | UP Aqua | 1.6% | – | – | 8 | – | – |
| 12 | Tropical | Tropical Group | 1.6% | – | – | – | 8 | – |
| 13 | Nutrafin | Rolf C. Hagen | 1.6% | – | 8 | – | – | – |
Questions about AI fish & aquarium recommendations
- Which fish & aquarium brand does ChatGPT recommend most in Vietnam?
- ChatGPT recommends Tetra most often for fish & aquarium in Vietnam. Across all assistants, Tetra leads with 31% of recommendations.
- Which fish & aquarium brand is improving fastest in Vietnam?
- Sera has the strongest momentum among challengers: AI names it first in 1 of 3 answers where it appears, while holding 13.4% share. This is the first Q4 2026 reading; change over time will be shown from the next update.
- How is the ranking calculated?
- We ask each AI assistant the questions shoppers ask in each category and market, record the top five brands it names, and give 35, 25, 20, 12 and 8 points for positions one to five. Share is a brand's points divided by all points awarded.
Fish: AI rankings by country
Covers: Fish Food.
Method: each AI assistant is asked the shopper questions for every segment in the category and market; the top five brands named score 35, 25, 20, 12 and 8 points. Share is a brand's points divided by all points awarded. Rankings reflect AI answers, not sales.
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