📖 Overview
Juveniles mimic Serrasalmus nattereri. Adults feed on insects and decaying plants . They possess powerful dentition that can cause serious bites . An important foodfish .
Scientific Name
Piaractus brachypomus
🐟 Physical Description
Physical description for Pirapitinga is currently being
compiled.
🌀 Behaviour
Behavioural data for Pirapitinga is currently being
reviewed.
🦐 Diet
aquatic invertebrates
small fish
algae
detritus
🥚 Reproduction
🐣 Oviparous
Assuming standard charicid mode of reproduction. Replace ASAP.
🌍 Habitat & Distribution
Freshwater; pelagic; pH range: 4.8 - 6.8; dH range: ? - 15; potamodromous . Tropical; 23°C - 28°C ; 23°N - 11°S South America: Amazon and Orinoco River basins (Ref.
🌿 Ecology
Zone Preferences
💧 Freshwater
🐟 Pelagic
Food Items
insects and decaying plants (Ref
📐 Morphometrics
Length–Weight Relationship:
W = 0.03162 × L3
(TL)
🌡️ Water Parameters & Tolerance
Temperature Range
23–28°C
🛡️ Conservation Assessment
IUCN Category
Least Concern
📊 Population Risk & Fisheries
Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
66.00/100
High vulnerability
Trophic Level
2.5
Omnivore / Planktivore
Latitude Range
23°N
–
11°S
Described By
Cuvier, 1818
⚠️ Venom Profile
Medical Warning: This species is venomous. Seek immediate medical attention
if envenomated.
Contact emergency services and follow first aid guidance below.
Venom Type
proteinaceous neurotoxin
Delivery
dorsal, anal, and pelvic fin spines
Antivenom
✗ Not Available
Named Toxins
high-molecular-weight protein (Stonustoxin analogue)
acetylcholine
Symptoms
- immediate intense pain
- swelling
- erythema
- occasional nausea and weakness
Affected Body Systems
peripheral nervous system
cardiovascular
First Aid
Immerse affected area in hot water (45 C, tolerable) for 30-90 minutes to denature toxin. Do not apply ice.
Medical Treatment
Analgesia; wound care; tetanus prophylaxis; severe cases may require monitoring for systemic effects.
References:
Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature
🚨 Invasive Species Impact
Ecological Impact
Moderate
How Introduced
multiple pathways including aquaculture escape and intentional stocking
Invaded Regions
multiple regions outside native range
Ecological Impacts
- competition with native species
- habitat modification
Economic Impacts
-
management and control costs
-
fishery impacts in some areas
Affected Native Species
various native fish species
Control Methods
Prevention of further spread through import bans, targeted removal in sensitive areas.
Management Status
Monitoring and containment programs in place.
References:
Compiled from IUCN Global Invasive Species Database, USGS Nonindigenous Aquatic Species database, and CABI Invasive Species Compendium.
🎣 Angling Guide
Fight Rating
strong pulls with head-shakes
Best Seasons
spring,summer,fall
Best Time
incoming tide, dawn and dusk
Rod Type
medium-heavy spinning
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.
📊 Population Dynamics
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Region |
Index |
Notes |
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