1
Overview of the System
Nexus Fish Network™ is an intelligent, AI-integrated aquaculture automation system designed to optimize fish farming operations using live sensor data, predictive analytics, and smart control.
It helps reduce mortality, optimize feed use, increase yield, and minimize environmental risks.
Key Benefits:
- Reduced fish mortality
- Optimized feed utilization
- Increased yield
- Minimized environmental risks
- Energy savings
2
Supported Species & Culture Modes
| Species | Culture Type | Stocking Density Supported |
|---|---|---|
| Pangasius | Intensive, Semi-Intensive | Up to 80-100 fish/m³ |
| Tilapia | Semi-Intensive, Intensive | Up to 40-60 fish/m³ |
| Indian Major Carps | Polyculture | 15-30 fish/m³ |
| Koi, Shingi, Pabda | High-Value Monoculture | 25-35 fish/m³ |
| Shrimp | Extensive to Intensive | 100-300/m² (L. vannamei) |
3
Core Components & Functionality
| Component | Purpose |
|---|---|
| DO Sensor | Measures dissolved oxygen in water |
| pH Sensor | Tracks water acidity or alkalinity |
| Ammonia Sensor | Monitors toxic ammonia levels |
| Temperature Sensor | Tracks real-time water temperature |
| IoT Controller | Collects data, connects to cloud, controls devices |
| AI Engine | Predicts fish needs, weather, DO levels |
| Smart Aerator Switch | Activates aerator based on DO and fish load |
| Smart Feeder Relay | Dispenses feed as per biomass & behavior |
| Dashboard/App | Displays data, sends alerts, remote control |
4
How the System Works
1
Data Collection
Sensors collect real-time water quality data (DO, pH, temp, ammonia)
2
Data Transmission
Data is sent to the cloud-based AI engine via the controller
3
AI Analysis
The AI model analyzes fish biomass, oxygen demand, feeding time, weather forecast, and historical trends
4
Automated Actions
Based on analysis, the system automatically operates aerators, feeders, and sends warnings
5
Farmer Insights
Farmers view insights and alerts through the web dashboard or mobile app
5
Sensor Data & Interpretation
| Parameter | Ideal Range (Pangasius) | What It Means | Action Triggered |
|---|---|---|---|
| DO (mg/L) | 4.5 - 6.5 | Low DO = Stress, disease | Aerator ON |
| pH | 7.0 - 8.5 | <6.5 = Acidic, >9 = Toxic | Alert Only |
| Temp (°C) | 26 - 32 | Impacts metabolism and oxygen demand | Adaptive Feeding |
| Ammonia (mg/L) | <0.5 | >1.0 = Dangerous, <0.2 = Safe | Alert & Pump ON |
6
Smart Automation Modules
A. Smart Aeration
- Auto Mode: Starts based on DO thresholds, biomass, & temp
- Manual Mode: User controls via app
- AI Mode: Predictive control based on time of day, fish load, upcoming weather
B. Smart Feeding
- Adjusts feed quantity & timing based on:
- Growth stage
- Biomass (weight input)
- Water temperature
- Time of day
- AI-predicted feed conversion ratio (FCR)
C. Water Exchange Alert
- Triggers based on high ammonia or low DO
- Optional: Activate water pump (manual or auto)
7
Troubleshooting Tips
| Problem | Possible Cause | Solution |
|---|---|---|
| Sensor reading 0 or null | Loose cable / bad calibration | Reconnect & recalibrate sensor |
| Aerator not working automatically | Relay not connected/configured | Check wiring, test manually |
| Data not updating | Internet outage / SIM expired | Check signal or data balance |
| App not showing correct status | Outdated firmware | Update firmware via app/web |
| DO always low even with aeration | Overloaded biomass / dirty water | Increase aeration time or partial water exchange |
8
Glossary of Technical Terms
| Term | Definition |
|---|---|
| DO (Dissolved Oxygen) | The amount of oxygen available in water for fish respiration |
| FCR (Feed Conversion Ratio) | Kg of feed required to gain 1 kg of fish weight |
| AI Prediction | AI-generated forecast based on previous data trends and patterns |
| IoT (Internet of Things) | Devices connected to internet to share sensor/control data |
| Automation Relay | Switch in control box that automatically activates connected devices |
| Secchi Disc | Tool used to measure pond water transparency |