Fish abundance estimation with imaging sonar in semi-intensive aquaculture ponds

To know the abundance of fishes and their size distribution in semi-intensive rearing systems traditional ponds is an aspect key to plan manage efficiently sales lots. Usually this information obtained by means sampling which mandatory supposes a direct catch stressful time consuming management fishes. Therefore, work we propose use non-invasive procedures based on multibeam sonars or imaging count ponds. For that, commercial technology portable-fixed sonar estimate gilt-head seabream ( Sparus aurata ) fishfarm from image analysis adapting statistical methodologies traditionally applied for bird estimation. Additionally, simulation software was developed emulate fish aggregation contained This computer program allows calculation correction factor depends transducer beam relation pond size. The results indicate that estimation as accurate manager using methods additionally it possible obtain realistic function biomass