New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

💧 Freshwater Least Concern 🍽️ Edible 🎣 Game Fish 🐠 Aquarium 🌡️ Tropical

Trout barb

Raiamas bola Hamilton, 1822
Max Length
35 cm
Max Weight
2.3 kg
Lifespan
-
Trophic Level
3.4
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
38.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Trout barb (Raiamas bola), first described by Hamilton, 1822 is a medium-sized fish in the family Cyprinidae (order Cypriniformes). Adults typically reach 35.00 cm in maximum length and up to 2.300 kg. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.The species is important as a food fish, valued as a game and sport species, kept in the aquarium hobby, and considered a sustainable seafood option under current management. As a member of the Cyprinidae, it shares life-history and morphological traits with its relatives in the group.

Scientific Name
Raiamas bola
Authority
Hamilton, 1822
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
35 cm
Max Weight
2.3 kg
Trophic Level
3.4
Resilience
Medium
Vulnerability
38.00/100
Migration
Potamodromous
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for Trout barb is currently being compiled.

🌀 Behaviour

Behavioural data for Trout barb is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal; potamodromous . Tropical recorded from Bhutan (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Migration
Potamodromous
Trophic Level
3.4±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00759 × L3.03 (TL)
Max TL
35cm
Max Weight
2,300g

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2010

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
38.00/100
Moderate vulnerability
Trophic Level
3.4
Predator
Climate Zone
Tropical
Described By
Hamilton, 1822

🎣 Angling Guide

Difficulty
Beginner
Fight Rating
strong pulls with head-shakes
Best Seasons
spring,summer,fall
Best Time
incoming tide, dawn and dusk
Line Weight
15-30
Rod Type
medium-heavy spinning
Hook Size
2/0-5/0
Catch & Release
✓ Recommended
Best Months
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Techniques
bottom fishing popping cork soft plastics live bait
Bait & Lures
live shrimp cut mullet soft plastic paddle-tails popping corks
Recommended Tackle
  • medium-heavy 7ft spinning rod
  • 30-50 lb braid
  • fluorocarbon leader
Where to Find Them
  • grass flats
  • oyster bars
  • marsh drains
  • deeper channel edges
Tips & Tricks
Popping cork technique attracts fish from distance. Fish moving tides.
Catch & Release Tips

Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.

Regulations Summary

⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.

🍽️ Edibility & Flavour

"Trout barb is an edible species."

✗ Not for Raw
✓ Fresh Indicators
  • 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
✗ Avoid If
  • Cloudy or sunken eyes
  • Strong fishy or ammonia odour
  • Soft, mushy flesh that doesn't spring back
  • Discoloured or dry flesh
Best Cooking Methods
Baking Grilling Pan-frying

⚡ Nutrition

Detailed nutritional data for Trout barb is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Trout barb has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.

🌿 Sustainability

Best Choice
Healthy stocks, low impact
Good Alternative
Well-managed, minor concerns
Use Caution
Check sourcing and season
Avoid
Overfished or high impact
✓ Sustainable Choice

🔬 Full Nutritional Profile

Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)

Proximate Composition
Energy125 kcal
Moisture75 %
Protein20 %
Total Fat4 %
Ash1.3 %
Fatty Acids (g)
Saturated Fat1 g
Monounsaturated Fat1.2 g
Polyunsaturated Fat1.5 g
Omega-3 Total1 g
EPA0.3 g
DHA0.5 g
Omega-6 Total0.3 g
Key Minerals & Vitamins
Calcium20 mg
Iron0.7 mg
Magnesium30 mg
Phosphorus220 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium32 µg
Vitamin B122 µg

📊 Population Dynamics

Year Region Index Notes
- - -

🌐 Names & Taxonomy

Language Common Names
🌍CES rajamas indický

Scientific Synonyms

Scientific Name Author Year Status
Barilius bola Hamilton 1822 Synonym
Barilius corbetti Tilak & Husain 1980 Synonym
Barilius goha Hamilton 1822 Synonym
Barilius jalkapoorei Shrestha 1980 Synonym
Bola bola Hamilton 1822 Synonym
Bola goha Hamilton 1822 Synonym
Cyprinus bola Hamilton 1822 Synonym
Cyprinus goha Hamilton 1822 Synonym
Leuciscus salmoides Blyth 1858 Synonym
Opsarius goha Hamilton 1822 Synonym
Opsarius gracilis McClelland 1839 Synonym
Opsarius megastomus McClelland 1839 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Trout barb ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.