Aquacraft Launches "uwotech Fish Counter," an AI-Powered Service for Automatically Counting Farmed Fish from Smartphone Videos
Aquacraft launched "uwotech Fish Counter" in March 2026, an AI service that automatically counts farmed fish from smartphone videos. The express version is free, requiring no special equipment or installation work. It addresses labor shortages and cost issues in aquaculture.
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- 📰 Published: March 31, 2026 at 19:00
Aquacraft Co., Ltd. (Higashiyamato City, Tokyo; Representative Director: Makoto Kaji; hereinafter "Aquacraft") launched "uwotech Fish Counter," a service that automatically counts farmed fish, in March 2026. This service uses AI to analyze videos of fish flowing through a flume during vaccination, taken with a smartphone, and returns the counting results within 2-3 business days. The express version is available for free, requiring no purchase of dedicated equipment or installation work.
"uwotech Fish Counter" launched. Supporting accurate fish counting using smartphones and AI.
## ◆Background of Development
In aquaculture, accurately grasping the number of fish in ponds is fundamental to management. Inaccurate counts directly impact management through increased feed costs due to over- or underfeeding, changes in shipping plans, and excessive vaccine use. Feed costs account for 60-70% of management costs in fish farming (according to Fisheries Agency data), and the price of compound feed for aquaculture has continued to rise since 2020, reaching approximately 260,000 yen per ton in November 2023 (according to the 2023 White Paper on Fisheries). Therefore, the importance of appropriate feeding based on accurate fish counts has become higher than ever.
Manual counting by humans is prone to errors, while existing products have high introduction hurdles due to cost.
Meanwhile, according to the 2023 Fisheries Census (Ministry of Agriculture, Forestry and Fisheries), the number of fishery workers decreased by 20.1% from five years ago to 121,230, and in individual operations, those aged 65 or older account for 53.7%. As labor shortages and an aging workforce progress in aquaculture, traditional counting work, where thousands to tens of thousands of fish are counted by hand, places a significant burden on the現場. The Fisheries Agency also promotes the introduction of ICT and AI-based fish counting systems as part of "Smart Fisheries." However, existing automatic counters (automatic counting machines) require an initial investment of 2 million to 10 million yen, plus installation work for large equipment, making them difficult for small and medium-sized aquaculture businesses to adopt. Against this background, Aquacraft developed a new counting method using smartphones and AI to solve the counting challenges identified through the operation of its cloud service for aquaculture, "uwotech pro."
## ◆About "uwotech Fish Counter"
AI automatically analyzes recorded data to count the number of fish.
"uwotech Fish Counter" is a service that uses AI to analyze videos of farmed fish taken with a smartphone during vaccination or sorting, and automatically counts the number of fish.
Start immediately with just your smartphone. Initial costs, monthly fees, and measurement fees are all free (for the express version only).
1. **Completed with just a smartphone**
No need to purchase dedicated cameras or equipment. Simply set your smartphone above the flume and record to use. No installation work is required. Initial costs are free.
2. **Unlimited free measurement**
The express version (AI automatic counting) is provided free of charge during the data accumulation period for improving AI accuracy. There are no usage limits, and the monthly fee is 0 yen. If detailed analysis by a high-precision AI model is desired, the high-precision version (5,000 yen/hour *excluding tax) can be used.
3. **Results returned in 2-3 business days**
Upload the video via the form, and the counting results will be sent by email. No complex on-site operations are required.
Just shoot and send, so it's easy to use.
### "uwotech Fish Counter" Service Overview
- **Service Start:** 2026/4/1
- **Price:** Initial fee 0 yen, Express version Free / High-precision version 5,000 yen/hour (excluding tax)
- **Supported Formats:** MP4, MOV, AVI (up to 10GB)
- **Required:** Smartphone, Google account (for video upload)
- **Result Delivery Time:** 2-3 business days
- **Supported Fish Species:** Yellowtail, Greater Amberjack, Red Sea Bream, Striped Jack
## ◆Future Outlook
Going forward, by continuously improving the accuracy of the AI counting model through the accumulation of video data provided by "uwotech Fish Counter" users, we will challenge real-time counting. Furthermore, by linking with the production management service "uwotech pro" and the data utilization platform "uwotech connect," we plan to utilize counting data for in-pond management and business management, strengthening integration with existing services.
## ◆Company Profile
Aquacraft Co., Ltd.
Our company is a software development company challenging DX in fish farming with the vision of "connecting the everyday reality of delicious fish on the table to the next generation." We maximize the power of data and technology to support producers from behind the scenes.
**Location:** Nishiki Building 203, 1-18-16 Tateyama, Higashiyamato City, Tokyo
**Representative:** Makoto Kaji
**Established:** July 2022
**Business Activities:** Planning, development, sales, and maintenance of data analysis and management services for aquaculture businesses / Planning, development, manufacturing, sales, maintenance, leasing, and import/export of software and hardware
**URL:** https://aquacraft.blue/
## ◆Contact for this matter
Aquacraft Co., Ltd. Representative Director Makoto Kaji
**Email Address:** m.kaji@aquacraft.blue
"uwotech Fish Counter" launched. Supporting accurate fish counting using smartphones and AI.
## ◆Background of Development
In aquaculture, accurately grasping the number of fish in ponds is fundamental to management. Inaccurate counts directly impact management through increased feed costs due to over- or underfeeding, changes in shipping plans, and excessive vaccine use. Feed costs account for 60-70% of management costs in fish farming (according to Fisheries Agency data), and the price of compound feed for aquaculture has continued to rise since 2020, reaching approximately 260,000 yen per ton in November 2023 (according to the 2023 White Paper on Fisheries). Therefore, the importance of appropriate feeding based on accurate fish counts has become higher than ever.
Manual counting by humans is prone to errors, while existing products have high introduction hurdles due to cost.
Meanwhile, according to the 2023 Fisheries Census (Ministry of Agriculture, Forestry and Fisheries), the number of fishery workers decreased by 20.1% from five years ago to 121,230, and in individual operations, those aged 65 or older account for 53.7%. As labor shortages and an aging workforce progress in aquaculture, traditional counting work, where thousands to tens of thousands of fish are counted by hand, places a significant burden on the現場. The Fisheries Agency also promotes the introduction of ICT and AI-based fish counting systems as part of "Smart Fisheries." However, existing automatic counters (automatic counting machines) require an initial investment of 2 million to 10 million yen, plus installation work for large equipment, making them difficult for small and medium-sized aquaculture businesses to adopt. Against this background, Aquacraft developed a new counting method using smartphones and AI to solve the counting challenges identified through the operation of its cloud service for aquaculture, "uwotech pro."
## ◆About "uwotech Fish Counter"
AI automatically analyzes recorded data to count the number of fish.
"uwotech Fish Counter" is a service that uses AI to analyze videos of farmed fish taken with a smartphone during vaccination or sorting, and automatically counts the number of fish.
Start immediately with just your smartphone. Initial costs, monthly fees, and measurement fees are all free (for the express version only).
1. **Completed with just a smartphone**
No need to purchase dedicated cameras or equipment. Simply set your smartphone above the flume and record to use. No installation work is required. Initial costs are free.
2. **Unlimited free measurement**
The express version (AI automatic counting) is provided free of charge during the data accumulation period for improving AI accuracy. There are no usage limits, and the monthly fee is 0 yen. If detailed analysis by a high-precision AI model is desired, the high-precision version (5,000 yen/hour *excluding tax) can be used.
3. **Results returned in 2-3 business days**
Upload the video via the form, and the counting results will be sent by email. No complex on-site operations are required.
Just shoot and send, so it's easy to use.
### "uwotech Fish Counter" Service Overview
- **Service Start:** 2026/4/1
- **Price:** Initial fee 0 yen, Express version Free / High-precision version 5,000 yen/hour (excluding tax)
- **Supported Formats:** MP4, MOV, AVI (up to 10GB)
- **Required:** Smartphone, Google account (for video upload)
- **Result Delivery Time:** 2-3 business days
- **Supported Fish Species:** Yellowtail, Greater Amberjack, Red Sea Bream, Striped Jack
## ◆Future Outlook
Going forward, by continuously improving the accuracy of the AI counting model through the accumulation of video data provided by "uwotech Fish Counter" users, we will challenge real-time counting. Furthermore, by linking with the production management service "uwotech pro" and the data utilization platform "uwotech connect," we plan to utilize counting data for in-pond management and business management, strengthening integration with existing services.
## ◆Company Profile
Aquacraft Co., Ltd.
Our company is a software development company challenging DX in fish farming with the vision of "connecting the everyday reality of delicious fish on the table to the next generation." We maximize the power of data and technology to support producers from behind the scenes.
**Location:** Nishiki Building 203, 1-18-16 Tateyama, Higashiyamato City, Tokyo
**Representative:** Makoto Kaji
**Established:** July 2022
**Business Activities:** Planning, development, sales, and maintenance of data analysis and management services for aquaculture businesses / Planning, development, manufacturing, sales, maintenance, leasing, and import/export of software and hardware
**URL:** https://aquacraft.blue/
## ◆Contact for this matter
Aquacraft Co., Ltd. Representative Director Makoto Kaji
**Email Address:** m.kaji@aquacraft.blue
FAQ
What kind of service is uwotech Fish Counter?
It's a service where AI analyzes videos of farmed fish taken with a smartphone to automatically count the number of fish. No special equipment or installation work is required, and the express version is available for free.
Are there any initial or monthly fees?
The initial fee is 0 yen. The express version is free to use, and the high-precision version is available for 5,000 yen/hour (excluding tax).
What fish species are supported?
It supports Yellowtail, Greater Amberjack, Red Sea Bream, and Striped Jack. More species are planned to be supported in the future.