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🌊 Marine Least Concern 🍽️ Edible 🎣 Game Fish 🌡️ Tropical

Grass emperor

Lethrinus laticaudis Alleyne & Macleay, 1877
Max Length
56 cm
Max Weight
-
Lifespan
-
Trophic Level
4.5
Depth
5–35 m
Climate
Tropical
Resilience
Medium
Vulnerability
39.00/100
Typical Length
35 cm
Depth Zone
reef

📖 Overview

Juveniles found in seagrass beds and mangrove swamps. Adults found over coral reefs. Often in schools . Feeds mainly on crustaceans and fishes. Considered a good food fish. Marketed fresh .

Scientific Name
Lethrinus laticaudis
Authority
Alleyne & Macleay, 1877
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
56 cm
Depth Range
5–35 m
Trophic Level
4.5
Resilience
Medium
Vulnerability
39.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 10; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 8. Cheek without scales; the inner base of pectoral fins densely covered with scales. Body is tan, brown or yellow with scattered irregular blotches; head brown or yellow with blue dots on cheeks and short blue stripes radiating in front and behind the eye, sometimes a number of blue cross stripes between the eyes; fines pale or yellow, the vertical fins are mottled.: fusiform / normal; Cross section: oval.

🌀 Behaviour

Behavioural data for Grass emperor is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; brackish; reef-associated; non-migratory; depth range 5 - 35 m . Tropical; 3°S - 23°S

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish 🪸 Reef Associated
Migration
Non-migratory
Trophic Level
4.5±0.8
🐠 Schooling
Food Items

crustaceans and fishes

📐 Morphometrics

Length–Weight Relationship: W = 0.01445 × L2.98 (TL)
Max TL
56cm
Dorsal Spines
10
Dorsal Rays
9
Anal Spines
3
Anal Rays
8

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
39.00/100
Moderate vulnerability
Trophic Level
4.5
Apex / Top predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Alleyne & Macleay, 1877

🎣 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

"Lethrinus Laticaudis 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

Per 100g cooked - Source: USDA FoodData Central

Nutrient Amount
Protein 20.6 g
Omega-3 (total) 139 mg

🔬 Mercury Safety

Mercury data for Grass emperor 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
- - -

👥 Community & Contribute

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