As they lay dead and dying in the water, invasive carp feasted on their bodies. In the Darling-Baaka, most of the fish that died were bony herring, a native species. A third of freshwater fish species are threatened with extinction, according to a 2021 report by sixteen global environmental organizations. Consequently, fish die-offs are contributing to a growing biodiversity crisis. “You get the native fish dying off sooner,” says Grafton, and more resilient invasive species take their place. Suffocation often doesn’t affect all fish equally. “Ultimately, the fish death was because there wasn’t enough oxygen in the water,” says Quentin Grafton, the director of Australian National University’s Centre for Water Economics, Environment and Policy. In both Texas and the Darling-Baaka, as with most other die-offs, the fish died in a mass suffocation.
In many places, the millions of carcasses were so densely packed that observers could hardly see the water, which had turned murky green from the swiftly-rotting flesh.
In March, the Darling-Baaka River in Australia flashed silver with fish bodies. Texas is not the only place to see mass fish deaths recently. Each year, FWC will evaluate the redfish fishery in each region using this metrics, and the results are summarized in Annual Reviews (see links below).Please be respectful of copyright. In 2022, FWC adopted a more holistic management approach for redfish focused on smaller management regions, in which management decisions are informed by 6 management metrics: escapement, relative abundance, habitat, harmful algal blooms, fishing effort, and stakeholder feedback. Escapement is the proportion of fish that survive through age four relative to the fish that would have survived if there was no fishery. Red drum stocks have rebounded and are currently exceeding the FWC's management goal of 40% escapement in most parts of Florida. In 1989, the slot limit of 18-27 inches, the bag limit of one fish per person and a closed season from March-May were put in place. In the late 1980s red drum was overfished, thus several emergency closures were established to reduce fishing pressure and allow the stock to rebuild. Management of red drum in Florida is considered a success story. Florida Youth Conservation Centers Network.Great Florida Birding and Wildlife Trail.Report injured, orphaned or dead manatees.Report fish kills, wildlife emergencies, sightings, etc.
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