Brown chub
📖 Overview
Found around exposed seaward reefs of isolated high islands such as the northernmost Mariana and Bonin Is. Feeds on Sargassum and Turbinaria algae. Valued as a food fish, but not in Hawaii .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 11; Dorsal soft rays (total): 11 - 12; Anal spines: 3; Anal soft rays: 10 - 12; Vertebrae: 16. This species is distinguished by the following characters: terminal mouth is almost in an oblique angle; presence of scales in the interorbital region; D XI,11-12 rays; A III,10-12; gill rakers externally on first arch 4-7 + 13-17; pectoral fin is relatively short, 13.6-21.3 %SL); anal-fin base relatively long (18.1-24.8 %SL; lateral line scales 61-76, with pores 51-60; longitudinal scales 54-67; cheek scales 9-16; vertebrae 10 + 16; low number of pterygiophores, dorsal 20-21 and anal 12. Colour of body variable brownish to silvery with dusky unpaired fins when fresh; soft parts of the dorsal and anal fins appear dusky and have black or darker edges; dark edges on dorsal, anal and caudal fins appear pronounced in more adult individuals, but may also vary from habitat to habitat; cheek and area below eye usually with a white or silvery streak .: short and / or deep; Cross section: compressed.
🌀 Behaviour
Behavioural data for Brown chub is currently being reviewed.
🦐 Diet
🥚 Reproduction
Oviparous .
🌍 Habitat & Distribution
Marine; reef-associated; oceanodromous ; depth range 2 - ? m . Tropical; 37°N - 41°S, 17°E - 109°W South Africa, western and eastern Australia, Lord Howe and Rapa islands, southern Japan and Ryukyu Islands.
🌿 Ecology
Sargassum and Turbinaria algae
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🎣 Angling Guide
- medium-heavy 7ft spinning rod
- 30-50 lb braid
- fluorocarbon leader
- grass flats
- oyster bars
- marsh drains
- deeper channel edges
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
🍽️ Edibility & Flavour
"Brown chub is an edible species."
- Clear, bright eyes — cloudy eyes indicate age
- Firm flesh that springs back when pressed
- Fresh ocean smell, never strong or ammonia-like
- Bright red or pink gills, not grey or brown
- Shiny, moist skin with scales tightly attached
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Per 100g cooked - Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 18.2 g |
| Omega-3 (total) | 72 mg |
🔬 Mercury Safety
Mercury data for Brown chub has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Dorsuarius nigrescens | Lacepède | 1803 | Synonym |
| Kiphosus bigibbus | Lacepède | 1801 | Synonym |
| Kyphosus fuscus | Lacepède | 1803 | Synonym |
| Pimelepterus boscii | Cuvier & Valenciennes | 1831 | Synonym |
| Pimelepterus fallax | Klunzinger | 1884 | Synonym |
| Pimelepterus fuscus | Lacepède | 1803 | Synonym |
| Pimelopterus fuscus | Lacepède | 1803 | Synonym |
| Xyster fuscus | Lacepède | 1803 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 4 records indexed .
👥 Community & Contribute
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