LND topic: fish-health page 1

fish health

Pesticides in water: How they harm fish and what can be done about it

June 19, 2026

Every year, tons of pesticides wash into rivers and lakes from farms and city streets. These chemicals, designed to kill weeds, mold, and bugs, don’t just vanish. They linger in the water, build up in fish bodies, and mess with how fish live and grow. Some pesticides break down quickly, but others s

environment

Fish struggle when plastic bits and pesticides team up

April 26, 2026

Scientists tested what happens when tiny plastic fibers and a common insect killer show up together in the water where young tilapia live. Over six weeks, fish exposed to both pollutants grew less and ate food less efficiently than fish exposed to just one or none at all. Their guts showed damage to

science

Manganese Matters: Boosting Fish Growth and Health

April 4, 2025

Fish farming is big business. One key player in this industry is the Cirrhinus mrigala. This fish is popular in aquaculture due to its fast growth and adaptability. But to keep these fish healthy and growing, farmers need to pay close attention to their diet. One crucial nutrient is manganese.

environment

Metal in Fish: Surprising Findings in a Polluted River

February 14, 2025

In a river tainted by mining waste, scientists found something unexpected. They checked out six metals in a type of salmon called masu salmon. The metals were copper, zinc, cadmium, lead, arsenic, and selenium. They looked at nine spots in the polluted river and a nearby clean river. The goal was to

science

Nanoparticles in Water: How They Affect Fish Gills and Microbes

January 27, 2025

You've probably heard about tiny nanoparticles being used to fight bacteria. But what happens when these nanoparticles, like zinc oxide (ZnO) and titanium dioxide (TiO₂), end up in our rivers and lakes? Scientists wanted to find out how they might affect rainbow trout. They exposed the fish to these

science

Skip to Grow with the Right Oil: A Fishy Experiment

December 29, 2024

Scientists recently tried something new with tambaqui fish, a type of Amazonian fish. They added different amounts of an essential oil from a plant called Croton conduplicatus to their food. This oil has certain compounds like 1, 8-Cineole, p-Cymene, and α-Phellandrene. The fish were fed this specia