Massive fish deaths along Boyapadu coastline in Andhra Pradesh have fishermen,environmental experts on edge. Investigation by ICAR-Central Marine Fisheries Research Institute (CMFRI) found around 11 tonnes of fish, mostly pony fish (Leiognathus),washed ashore over 1,500-meter stretch June 20,2026.
Initial findings blame hypoxia,linked to large algal bloom,for this mortality. Researchers noted high densities of Trichodesmium,a cyanobacteria,in water samples,which depletes oxygen in marine settings. Dead fish's estimated biomass valued at ₹4,96,889, based on market price of ₹45 per kilogram.
After reports,CMFRI experts rushed to site next day. They found area littered with dead fish,about 94% pony fish. Probe began after complaint from Shankar, Joint Chief Environmental Engineer at Andhra Pradesh Pollution Control Board (APPCB),who held talks with CMFRI officials .
Lab tests showed no external lesions or disease signs on fish . But many had ‘open-mouth’ condition,linked to respiratory distress from low oxygen. Seabirds,scavengers were absent,raising more environmental concerns.
Local fishermen saw fish schools struggling before dying on beach. Many blame contamination from nearby industry,especially Hetero Complex in Nakkapalli. Fishermen fear wastewater discharge from pipelines,extending 2 kilometers offshore,may have created dangerous conditions for marine life .
Environmental studies confirmed dense algal bloom in near-shore waters,marked by discolouration. Trichodesmium concentration hit 380 cells per milliliter,levels tied to past fish kills. Researchers warned bloom could cause hypoxia,as decaying biomass uses oxygen in water.
CMFRI's preliminary assessment points to hypoxia as likely fish killer. Report notes anoxic water,pushed shoreward during high tide,trapped fish,crippling swimming ability. Findings highlight eutrophication,oxygen-depleted zones,institute insists on deeper probe into local industries' discharge practices .
An inquiry launched to examine full environmental impact on region's marine resources . Government officials,experts working together to assess situation,focus on pollution claims from industrial sources. As investigation unfolds,local community stays alert,concerned for coastal waters,future of their fishing livelihoods…
