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💧 Freshwater Least Concern 🍽️ Edible 🌡️ Tropical

Rio Napo cory

Gastrodermus napoensis Nijssen & Isbrücker, 1986
Max Length
4.2 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Rio Napo cory (Gastrodermus napoensis) is a ray-finned fish. It inhabits freshwater waters in benthic environments. This species can reach a maximum total length of 4.2 cm. With a trophic level of 3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List. Commercially fished and consumed as food.

Scientific Name
Gastrodermus napoensis
Authority
Nijssen & Isbrücker, 1986
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
4.2 cm
Trophic Level
3
Resilience
High
Vulnerability
10.00/100
Water Temp
22–26 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Gastrodermus
Gastrodermus
Species
Rio Napo cory
Gastrodermus napoensis

🐟 Physical Description

Physical description for Rio Napo cory is currently being compiled.

🌀 Behaviour

Behavioural data for Rio Napo cory 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; pH range: 6.0 - 8.0; dH range: 2 - 25. Tropical; 22°C - 26°C South America: western Amazon River basin in eastern Ecuador and Loreto, Peru.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3±0.3
🐠 Schooling

📐 Morphometrics

Length–Weight Relationship: W = 0.0182 × L3.02 (TL)
Max TL
4.2cm

🌡️ Water Parameters & Tolerance

Temperature Range
22–26°C
pH Range
6–8
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2014

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3
Predator
Climate Zone
Tropical
Described By
Nijssen & Isbrücker, 1986

🍽️ Edibility & Flavour

"Gastrodermus Napoensis 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 Rio Napo cory is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Rio Napo cory 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

📊 Population Dynamics

Year Region Index Notes
- - -

👥 Community & Contribute

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