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

💧 Freshwater Near Threatened 🍽️ Edible 🐠 Aquarium 🌡️ Subtropical

Onychostoma Gerlachi

Onychostoma gerlachi Peters, 1881
Max Length
31.6 cm
Max Weight
1.0 kg
Lifespan
-
Trophic Level
2.7
Depth
-
Climate
Subtropical
Resilience
Medium
Vulnerability
43.00/100
Typical Length
16.5 cm
Depth Zone
-

📖 Overview

Onychostoma Gerlachi (Onychostoma gerlachi), first described by Peters, 1881 is a medium-sized fish in the family Cyprinidae (order Cypriniformes). Adults typically reach 31.60 cm in maximum length and up to 1.000 kg. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Near Threatened.The species is important as a food fish, 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
Onychostoma gerlachi
Authority
Peters, 1881
Habitat
Freshwater
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
NT
Max Length
31.6 cm
Max Weight
1 kg
Trophic Level
2.7
Resilience
Medium
Vulnerability
43.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

With wide mouth, width about 1.5 times in maximum head width; adults without barbels; last simple dorsal ray strong and serrated posteriorly (in specimens over about 10 cm SL); caudal peduncle 1.7-2.7 times longer than deep .: fusiform / normal.

🌀 Behaviour

Behavioural data for Onychostoma Gerlachi is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Subtropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.7±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00851 × L3.09 (TL)
Max TL
31.6cm
Max Weight
1,000g

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2007

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
43.00/100
Moderate vulnerability
Trophic Level
2.7
Omnivore / Planktivore
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Peters, 1881

🍽️ Edibility & Flavour

"Onychostoma Gerlachi 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 Onychostoma Gerlachi is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Onychostoma Gerlachi 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 Chramule Gerlachova
🇨🇳Chinese 南方白甲鱼

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 9 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 Onychostoma Gerlachi ↗
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.