MatsyaMetri enables users to capture images of fish and estimate their dimensions using an intelligent, image-based measuring tool.
Kochi: In a major effort in simplifying biological data collection, India’s scientists at the ICAR-Central Marine Fisheries Research Institute (CMFRI) have developed a smartphone application that can measure the length and width of fish without physically handling them.
Named MatsyaMetri , the application enables users to capture images of fish and estimate their dimensions using an intelligent, image-based measuring tool. The measurements are automatically recorded and compiled into length-frequency datasets, which are used for fisheries population analysis, stock assessment, and resource monitoring.
According to Dr. Grinson George, Director, ICAR-CMFRI, the application simplifies biological data collection by automatically recording measurements and generating length-frequency datasets. Designed for fisheries scientists, researchers, and field survey teams, MatsyaMetri facilitates rapid and systematic collection of biological data to support fisheries assessment and management.
The application allows multiple individuals of the same fish species or aquatic resource to be measured under a single sampling session. Once measurements are completed, the system automatically generates length-frequency distributions using appropriate class intervals. The recorded measurements and the corresponding photographs can be saved along with the sampling session and subsequently exported as a CSV file for further scientific analysis.
“The application is aimed at simplifying biological data collection during field surveys and supporting more systematic generation of fisheries data for scientific assessment and resource monitoring,” said Dr Eldho Varghese, CMFRI Senior Scientist and ICAR-National Fellow, who developed the application.
MatsyaMetri is designed for ARCore-supported Android devices. After registering and logging in, users can create a sampling session, point the smartphone camera at a flat surface, and place the fish within the camera view. The application detects the surface and provides an on-screen measuring guide for estimating the length and width of the fish.
The project is supported by the Indian Council of Agricultural Research (ICAR) under the Department of Agricultural Research and Education, Government of India, through the ICAR-National Fellow Project.
