Environment ❯ Ecosystems

Aquatic Ecosystems

Invasive Species Freshwater Ecosystems Fish Species Fish Populations Freshwater Fish Freshwater Habitats Predator-Prey Dynamics Marine Life Aquariums Lakes

8-Year-Old Catches Piranha at Ridley Park Lake

State biologists say the fish was likely an unlawfully released pet urging residents to report any other exotic sightings.

Scientists Warn Dissolved Oxygen Is Falling Across Global Waters

EDF Shuts Three Reactors and Downgrades Eight as France Faces Intense Heatwave

Study Finds Every Stretch of Rio Tietê Carries Multiple Contaminants

Delhi LG Orders Phased Revival of Sanjay Lake

EPA Finds Ireland’s Water Quality Stalled in 2025

Hazardous Algae Advisory Issued for Two Lake Nokomis Beaches

Study Finds Bacteria Living in Fog Grow and Remove Formaldehyde

Low-Dose Psilocybin Calms High-Energy Attacks in Aggressive Fish

San Joaquin County Declares Emergency Over Golden Mussel Infestation

Alberta Mandates Summer Boat Inspections at Eastern and Southern Borders

Canada Renews Pacific Salmon Strategy With $412.9 Million Over Five Years

New 275‑Million‑Year‑Old Stem‑Tetrapod From Brazil Identified From Twisted, Side‑Toothed Jaws

Angler Data Confirm Wolgazander Established Across Northern Germany

Three-Flippered Sea Turtle ‘Porkchop’ Returns to San Gabriel River After Yearlong Rehab

France Convenes Emergency Meeting on Marineland Orcas After Report Flags Imminent Tank Failure Risk

Comb Jelly Invasion Surges in Venice Lagoon, Threatening Fisheries

Cold Snap Drives 697 Manatees to Blue Spring as Large Groups Seen at Three Sisters

Large Study Finds Widespread Pharmaceutical Contamination in Río de la Plata Tributaries

Mosasaurs Lived in Rivers Near the End of the Cretaceous, Isotope Study Finds