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💧 Freshwater Least Concern 🌡️ Subtropical

Dwarf corydoras

Gastrodermus hastatus Eigenmann & Eigenmann, 1888
Max Length
2.4 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Dwarf corydoras (Gastrodermus hastatus) is a ray-finned fish. It inhabits freshwater waters in benthic environments. This species can reach a maximum total length of 2.4 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.

Scientific Name
Gastrodermus hastatus
Authority
Eigenmann & Eigenmann, 1888
Habitat
Freshwater
Climate
Subtropical
IUCN Status
LC
Max Length
2.4 cm
Trophic Level
3
Resilience
High
Vulnerability
10.00/100
Water Temp
25–28 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Gastrodermus
Gastrodermus
Species
Dwarf corydoras
Gastrodermus hastatus

🐟 Physical Description

Physical description for Dwarf corydoras is currently being compiled.

🌀 Behaviour

Behavioural data for Dwarf corydoras is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

Fecundity
2–4eggs

The female holds 2-4 eggs between her pelvic fins, where the male fertilizes them for about 30 seconds. Only then the female swims to a suitable spot, where she attaches the very sticky eggs. The pair repeats this process until about 100 eggs have been fertilized and attached . However, it is also believed that this species only lays a single egg .

🌍 Habitat & Distribution

Freshwater; demersal; pH range: 6.0 - 8.0; dH range: 5 - 19. Subtropical; 25°C - 28°C South America: Amazon and Paraguay River basins (Ref.

🌿 Ecology

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

📐 Morphometrics

Length–Weight Relationship: W = 0.0182 × L3.02 (TL)
Max TL
2.4cm

🌡️ Water Parameters & Tolerance

Temperature Range
25–28°C
pH Range
6–8
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2021

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3
Predator
Climate Zone
Subtropical
Described By
Eigenmann & Eigenmann, 1888

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