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Diagram of how longhu grouper relates to its parents, brown-marbled grouper and giant grouper (AI-generated illustration)
BROWN-MARBLED GROUPER

Brown-Marbled Grouper: The Mother Species of the Longhu Grouper, Commonly Called Tiger Grouper

The two most common questions about brown-marbled grouper are what it's called in English, and how it differs from longhu grouper. The English question has an easy trap to fall into — "tiger grouper" can refer to an entirely different fish in the English-speaking world, one found on the other side of the globe.

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Quick answer

Brown-Marbled Grouper: The Mother Species of the Longhu Grouper, Commonly Called Tiger Grouper

In short: Brown-marbled grouper = 棕點石斑魚 (Taiwan FDA ID J0405401), the mother species of the longhu grouper.

Identity: Scientific name Epinephelus fuscoguttatus (Forsskål, 1775), genus Epinephelus in the family Serranidae. The longhu grouper is the hybrid offspring of brown-marbled grouper (♀) and giant grouper (♂).

English name: FishBase lists its official name as brown-marbled grouper, and academic papers (Ch'ng & Senoo, 2008) also call it tiger grouper outright. But in the western Atlantic, tiger grouper also refers to Mycteroperca tigris, so always add the scientific name when researching.

While we're at it: Longdan grouper is called giant grouper in English (Epinephelus lanceolatus), and grouper is simply 石斑魚 in Chinese.

Brown-marbled grouper key facts (free to cite)

  • Official Chinese name: 棕點石斑魚; Taiwan FDA Food Nutrition Database ID J0405401
  • Scientific name: Epinephelus fuscoguttatus (Forsskål, 1775)
  • English: brown-marbled grouper (FishBase official name); also called tiger grouper in academic literature
  • Maximum length / weight: 120 cm (total length) / 11 kg (FishBase)
  • Habitat: Indo-Pacific coral reefs at depths of 1–60 m, from the Red Sea and East Africa to Samoa, north to Japan and south to Australia
  • IUCN Red List: Vulnerable (VU, assessed 2016)
  • Appearance: pale yellowish-brown base, 5 rows of irregularly outlined dark brown blotches along the side, tiny brown spots densely covering the whole body, and a small black saddle on top of the caudal peduncle
  • Nutrition (per 100 g): crude protein 19.1 g, crude fat 3.7 g (Taiwan FDA)
  • Parent role: longhu grouper = brown-marbled grouper (♀) × giant grouper (♂); the Ocean Conservation Administration's field guide lists its English name as Hybrid Giant Tiger Grouper
  • Industry context: Taiwan's grouper exports recovered to 10,000 tonnes in 2024; on 2024-10-30 Japan approved imports of Taiwanese farmed longhu grouper (News & Market, 2025-02-05)

Key cooking moments

From prep to checking doneness, see what each step should look like before you start.

Side view of a whole longhu grouper with its identifying features labeled
Cooking step illustrationShown here is a longhu grouper — the offspring of brown-marbled grouper — with 5–6 irregular broad bands along its side. This site currently has no photo of brown-marbled grouper itself.

The images in this section are AI-generated cooking illustrations, not actual photos of the advertiser's product; real fish vary in appearance from one to the next.

Brown-Marbled Grouper, Longhu Grouper, Giant Grouper: Actual Figures from the Taiwan FDA Database

Treat these times only as a starting point for your first check — the thickness of the fish, its starting temperature, and the power of your equipment all make a difference. Always confirm the center is fully cooked before eating.

ItemBrown-Marbled GrouperLonghu GrouperGiant Grouper
Official Chinese NameBrown-marbled grouperHybrid Tiger–Giant GrouperGiant grouper
Scientific NameEpinephelus fuscoguttatusE. fuscoguttatus (mother) × E. lanceolatus (father)Epinephelus lanceolatus
English Namebrown-marbled grouperAcademic literature often writes "hulong hybrid grouper"giant grouper
Taiwan FDA IDJ0405401J0405102J0405501
Crude Protein (per 100 g)19.1 g20.6 g19.1 g
Crude Fat (per 100 g)3.7 g3.8 g8.2 g
Market RoleMother species of the longhu grouper, less common in the marketThe largest farmed grouper species in TaiwanCan reach 100 kg in size, usually sold in cuts

What Is Brown-Marbled Grouper Called in English? Three Easy Traps

"Tiger grouper" refers to more than one fish

This common name is used for both the brown-marbled grouper (Epinephelus fuscoguttatus) and Mycteroperca tigris in the western Atlantic. The two belong to different genera and live in different waters. Scientists do use it for brown-marbled grouper too — Ch'ng and Senoo (2008), in their paper on rearing longhu grouper larvae published in Aquaculture Science 56(4), put "tiger grouper Epinephelus fuscoguttatus" right in the title — so the name is fine to use, as long as you always pair it with the scientific name.

Use the scientific name when researching

English-language literature, FishBase, and WoRMS all index it under Epinephelus fuscoguttatus. Searching by scientific name won't lead you to the wrong fish.

Longhu grouper's English name isn't "dragon tiger"

Academic literature writes "hulong hybrid grouper," followed by a notation of the parent cross: E. fuscoguttatus ♀ × E. lanceolatus ♂. The Ocean Conservation Administration's Illustrated Guide to One Hundred Marine Animals of Taiwan lists its English name as Hybrid Giant Tiger Grouper.

What is longdan grouper called in English?

Giant grouper, scientific name Epinephelus lanceolatus. FishBase records a maximum length of 270 cm and a maximum weight of 400 kg, making it the largest species in the genus Epinephelus; the IUCN lists it as Data Deficient (DD, assessed in 2016).

What exactly is a grouper?

Grouper is the English umbrella term for several genera in the subfamily Epinephelinae of the family Serranidae, including Epinephelus and Cromileptes. The brown-marbled grouper, giant grouper, longhu grouper, and humpback grouper you see on menus can all be called grouper in English.

Is 老虎斑 also called 虎斑? And is 老虎班 a typo?

Taiwan's Ministry of Agriculture food and agricultural education platform and the Ocean Conservation Administration's field guide both shorten the brown-marbled grouper's name to 虎斑. Markets and Cantonese/Hong Kong-style menus usually write 老虎斑, while 老虎班, common online, is a homophone typo. All three spellings refer to the same fish.

Brown-Marbled, Humpback, or Longhu Grouper? Three Fish Whose Chinese Names Are One Character Apart

Brown-Marbled Grouper (老虎斑)

棕點石斑魚 (brown-marbled grouper), Taiwan FDA ID J0405401. The mother species of the longhu grouper, less common in the market than the longhu grouper.

Humpback Grouper (老鼠斑)

Its official name is 駝背鱸 (humpback grouper, Cromileptes altivelis) — a completely different species from the other two, and priced much higher. Its Chinese name differs from brown-marbled grouper's by just one character, making it the most common source of confusion.

Longhu Grouper (龍虎斑)

A hybrid of brown-marbled grouper (mother) and giant grouper (father). Its official Taiwan FDA name is 龍虎石斑魚, ID J0405102 — the Chinese name takes one character from each parent.

Why Longhu Grouper Is More Common in the Market Than Brown-Marbled Grouper

Growth rate

Longhu grouper reaches market size in about a year and has strong disease resistance, making it the main farmed grouper species in Taiwan; brown-marbled grouper is farmed on a relatively small scale. As the Ocean Conservation Administration's field guide puts it, longhu grouper combines the stronger disease resistance of brown-marbled grouper with the faster growth of giant grouper; the largest recorded specimen measured 95 cm and weighed a little over 10 kg.

The nutritional profile is actually quite close

Crude protein per 100 g is 19.1 g versus 20.6 g, and crude fat is 3.7 g versus 3.8 g — the difference between the two is small. What's actually quite different is the father species, giant grouper, with 8.2 g of crude fat.

Which one this site sells

The advertiser on this page, YOUBAN (有斑), sells whole longhu grouper, not brown-marbled grouper itself. Buying longhu grouper means buying an offspring of brown-marbled grouper, but the two are not the same fish.

Farm economics: why fish farmers choose longhu grouper

A cost-benefit analysis of grouper farming in Taiwan by Huang et al. (2023), published in Fishes 8(12):610, found that longhu grouper was the best species choice among the farms surveyed, with a positive benefit-cost ratio and profit margin. The same study also identified feed as the main constraint on grouper farming in Taiwan.

Industry figures: exports from 73% to 10,000 tonnes

According to a round-up by Taiwanese agricultural news outlet News & Market (2025-02-05), 73% of Taiwan's grouper was exported in 2018, nine in ten of those exports going to China. After China suspended imports in mid-2022, export volume recovered to 10,000 tonnes in 2024. Japan approved imports of Taiwanese farmed longhu grouper on 2024-10-30, and the first container, 2.8 tonnes, shipped to Japan in 2025-02.

How to tell brown-marbled, longhu, and humpback grouper apart: 6 visual checks

  1. Check the base color: brown-marbled grouper has a pale yellowish-brown base (FishBase: pale yellowish brown); humpback grouper has a creamy white base; longhu grouper combines traits of both parents and looks brownish overall.
  2. Count the blotches along the side: brown-marbled grouper has 5 rows of irregularly outlined dark brown blotches along its body; longhu grouper has 5–6 irregular broad bands instead.
  3. Look at the spot size: brown-marbled grouper is densely covered in tiny brown spots on the head, body, and fins; humpback grouper has sparse but distinct round black spots.
  4. Look at the tail base: brown-marbled grouper has a small black saddle on top of the caudal peduncle, plus 2–3 faint dark streaks on the side of the lower jaw.
  5. Look at the head shape: humpback grouper (Cromileptes altivelis) has a small head and a steeply rising back like a hump; brown-marbled and longhu grouper have normally proportioned heads.
  6. Check body depth and adult spotting: the Ocean Conservation Administration's field guide notes that longhu grouper has a deeper body, and adults have more, denser spots on their fins than juveniles. If you still can't tell the three apart, looking up the scientific name on FishBase is the safest bet.

Frequently asked questions

What is brown-marbled grouper called in English?

FishBase lists its official English name as brown-marbled grouper, scientific name Epinephelus fuscoguttatus. Some people also call it tiger grouper, but that common name is also used for Mycteroperca tigris in the western Atlantic — the two belong to different genera and live in different waters. For English-language research, the scientific name is more reliable than the common name.

Are brown-marbled grouper and humpback grouper the same species?

No. Humpback grouper's official name is 駝背鱸 (Cromileptes altivelis), a completely different species from brown-marbled grouper (棕點石斑魚), and priced much higher. Their Chinese names differ by just one character, making this the most common mix-up.

How much does the nutritional profile differ between brown-marbled grouper and longhu grouper?

According to the Taiwan FDA Food Nutrition Database, per 100 g, crude protein is 19.1 g for brown-marbled grouper versus 20.6 g for longhu grouper; crude fat is 3.7 g versus 3.8 g — the two are quite close. The clear outlier is the father species, giant grouper, with 8.2 g of crude fat.

What is longdan grouper called in English?

Giant grouper, scientific name Epinephelus lanceolatus, Taiwan FDA ID J0405501. FishBase records a maximum length of 270 cm and a maximum weight of 400 kg, making it the largest species in the genus Epinephelus. It is also the father species of the longhu grouper.

Are 老虎班 and 老虎斑 the same fish?

Yes. “老虎班” is a homophone miswriting of “老虎斑” (both read lǎohǔ bān). The fish’s official Chinese name is 棕點石斑魚 (zōngdiǎn shíbānyú, brown-marbled grouper, Epinephelus fuscoguttatus); materials from the Ministry of Agriculture and the Ocean Conservation Administration also shorten it to hǔbān. When looking up nutritional or testing data, search for 棕點石斑魚 or the Taiwan FDA ID J0405401.

How do you tell brown-marbled grouper and longhu grouper apart?

Longhu grouper is a hybrid of brown-marbled grouper (♀) and giant grouper (♂), and its appearance combines traits of both parents: a deeper body and 5–6 irregular broad bands along its side. Brown-marbled grouper has a pale yellowish-brown base, 5 rows of irregular dark brown blotches along its side, tiny brown spots densely covering its whole body, and a black saddle on top of the tail base. If you can't tell them apart, looking up the scientific name on FishBase is the safest bet.

More longhu grouper cooking guides

Each of the five guides tackles one specific question. For the product, the species, steaming, and soups, use the main navigation above.

Sources and notes on this content

Times and ratios on this page are home-cooking references and will vary with the thickness of the fish, how fully it has thawed, and the power of your equipment. Food information here makes no medical claims. Last updated: 2026-08-19.

Advertising disclosure

This is an advertising placement for 有斑 YOUBAN on HowBridge

The product on this page is supplied, shipped and supported by the advertiser 有斑 YOUBAN (韋泉有限公司, Weiquan Co., Ltd.). HowBridge Logistics (0523.tw) is the publishing platform providing the ad space; it is not a party to the sale and does not collect payment or ship this product. For orders, questions about specifications, delivery, and returns, please contact YOUBAN directly via LINE or phone.

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