Fish News

September 19, 2025

Top Headlines

Scientists Just Found Hidden Parasitic Wasps Spreading Across the U. S.

Sep. 15, 2025 — Researchers discovered two new parasitic wasp species living in the U.S., tracing their origins back to Europe and uncovering clues about how they spread. Their arrival raises fresh questions about biodiversity, ecological risks, and the role of ...

Tiny Skaters Beneath the Arctic Ice Rewrite the Limits of Life

Sep. 12, 2025 — Hidden within Arctic ice, diatoms are proving to be anything but dormant. New Stanford research shows these glass-walled algae glide through frozen channels at record-breaking subzero temperatures, powered by mucus-like ropes and molecular motors. ...

Hungry Flathead Catfish Are Changing Everything in the Susquehanna

Sep. 9, 2025 — Flathead catfish are rapidly reshaping the Susquehanna River’s ecosystem. Once introduced, these voracious predators climbed to the top of the food chain, forcing native fish like channel catfish and bass to shift diets and habitats. Using stable ...

In the Dark for 11 Million Years: How Blind Cavefish Rewrote Evolution

Aug. 29, 2025 — Yale scientists discovered that cavefish species independently evolved blindness and depigmentation as they adapted to dark cave environments, with some lineages dating back over 11 million years. This new genetic method not only reveals ancient ...

Why Most Whale Sharks in Indonesia Are Scarred by Humans

Aug. 28, 2025 — Whale sharks in Indonesia are suffering widespread injuries, with a majority scarred by human activity. Researchers found bagans and boats to be the biggest threats, especially as shark tourism grows. Protecting these gentle giants may be as simple ...

Sharks’ Teeth Are Crumbling in Acid Seas

Aug. 27, 2025 — Even sharks’ famous tooth-regrowing ability may not save them from ocean acidification. Researchers found that future acidic waters cause shark teeth to corrode, crack, and weaken, threatening their effectiveness as hunting weapons and ...

DNA from the Deep Reveals a Hidden Ocean “Superhighway”

Aug. 7, 2025 — Deep beneath the ocean's surface, a groundbreaking DNA study reveals that the deep sea is far more globally connected than once thought. By analyzing thousands of brittle stars preserved in museum collections, scientists discovered these ancient ...

The Heatwave That Shattered Ecosystems, Starved Whales, and Drove Fish North

July 21, 2025 — A scorching marine heatwave from 2014 to 2016 devastated the Pacific coast, shaking ecosystems from plankton to whales and triggering mass die-offs, migrations, and fishery collapses. Researchers ...

Corals in Crisis: A Hidden Chemical Shift Is Reshaping Hawaiian Reefs

July 16, 2025 — Hawaiian coral reefs may face unprecedented ocean acidification within 30 years, driven by carbon emissions. A new study by University of Hawai‘i researchers shows that even under conservative climate scenarios, nearshore waters will change more ...

This Shark Can Change Color — Thanks to Hidden Nano Mirrors in Its Skin

July 11, 2025 — Blue sharks possess a secret hidden in their skin: a sophisticated arrangement of microscopic crystals and pigments that create their brilliant blue appearance — and may allow them to change color. Scientists have discovered that these ...

No Training Needed: How Humans Instinctively Read Nature’s Signals

July 10, 2025 — People can intuitively sense how biodiverse a forest is just by looking at photos or listening to sounds, and their gut feelings surprisingly line up with what scientists ...

Tiny Creatures, Massive Impact: How Zooplankton Store 65 Million Tonnes of Carbon Annually

June 27, 2025 — Zooplankton like copepods aren’t just fish food—they’re carbon-hauling powerhouses. By diving deep into the ocean each winter, they’re secretly stashing 65 million tonnes of carbon far below ...

Latest Headlines

updated 10:48am EDT

Ghost Sharks Grow Teeth on Their Heads to Mate

Sep. 5, 2025 — Ghost sharks have evolved rows of true teeth on a bizarre forehead rod used for mating. Fossil and genetic evidence revealed the tenaculum’s teeth develop the same way as those inside the mouth, ...

Fossil Reveals a 310-Million-Year-Old Fish That Ate With a Hidden Second Jaw

Sep. 4, 2025 — Scientists uncovered a 310-million-year-old fish fossil with a “tongue bite,” teeth on the roof and floor of its mouth that worked like a second ...

Bumble Bees Balance Their Diets With Surprising Precision

Aug. 27, 2025 — Bumble bees aren’t random foragers – they’re master nutritionists. Over an eight-year field study in the Colorado Rockies, scientists uncovered that different bee species strategically balance ...

Scientists Found the Missing Nutrients Bees Need — Colonies Grew 15-Fold

Aug. 23, 2025 — Scientists have developed a breakthrough food supplement that could help save honeybees from devastating declines. By engineering yeast to produce six essential sterols found in pollen, researchers ...

Great White Sharks Have a DNA Mystery Science Still Can’t Explain

Aug. 16, 2025 — Once on the brink during the last ice age, great white sharks made a remarkable recovery globally, but their DNA reveals a baffling story. Classic migration explanations fail, leaving scientists with ...

Tiny Ancient Whale With a Killer Bite Found in Australia

Aug. 13, 2025 — An extraordinary fossil find along Victoria’s Surf Coast has revealed Janjucetus dullardi, a sharp-toothed, dolphin-sized predator that lived 26 million years ago. With large eyes, slicing teeth, ...

Brighter, Bolder, Hotter: Why Female Guppies Can't Resist Orange

July 10, 2025 — Male guppies that glow with more orange aren’t just fashion-forward — they’re also significantly more sexually active. A UBC study reveals that brighter coloration is linked to virility and is ...

Hovering Fish Burn Twice the Energy—study Shocks Scientists

July 8, 2025 — Hovering fish aren’t loafing—they burn twice resting energy to make micro-fin tweaks that counteract a natural tendency to tip, and body shape dictates just how costly the pause is. The discovery ...

Sex Swap in Seconds: The Fish That Takes Charge and Changes Gender

June 27, 2025 — Remove the top male spotty fish and, within minutes, the next-in-line female morphs into the tank s new tyrant charging and nipping rivals while her body quietly begins a weeks-long transition to ...

Rainbow Reefs Revealed: The Secret 112-Million-Year Saga of Glowing Fish

June 17, 2025 — Scientists have uncovered that fish biofluorescence a captivating ability to glow in vivid colors has ancient roots stretching back over 100 million years. This trait evolved independently in reef ...

Toxic Tides: Centuries-Old Mercury Is Flooding the Arctic Food Chain

June 13, 2025 — Despite falling global mercury emissions, mercury levels in Arctic wildlife continue to rise. A new study reveals that ocean currents are delivering legacy mercury pollution from distant regions like ...

Cleaner Fish: Tiny Healers or Hidden Spreaders in Coral Reef Ecosystems?

June 12, 2025 — Reef "beauty salons" staffed by tiny cleaner fish aren t just for parasite removal they may also shape the microbial life of the entire ecosystem. A fascinating new study shows these ...

Satellite Tracking of 12,000 Marine Animals Reveals Ocean Giants Are in Trouble

June 7, 2025 — A massive global collaboration has tracked over 12,000 marine animals from whales to turtles to create one of the most detailed movement maps of ocean giants ever assembled. The project, MegaMove, ...

Birds Nested in Arctic Alongside Dinosaurs

May 29, 2025 — Spring in the Arctic brings forth a plethora of peeps and downy hatchlings as millions of birds gather to raise their young. The same was true 73 million years ago, according to a new article. The ...

Huge Sea-Urchin Populations Are Overwhelming Hawaii's Coral Reefs

May 28, 2025 — This study measured the growth rate of coral reefs in Honaunau Bay, Hawaii, using on-site data gathering and aerial imagery. Researchers found that the reefs are being eroded by sea urchin ...

New Velvet Worm Species a First for the Arid Karoo

May 28, 2025 — A new species of velvet worm, Peripatopsis barnardi, represents the first ever species from the arid Karoo, which indicates that the area was likely historically more forested than at present. In the ...

The Ocean Seems to Be Getting Darker

May 27, 2025 — Scientists, who have spent more than a decade examining the impact of artificial light at night on the world's coasts and oceans, have shown that more than one-fifth of the global ocean -- an ...

Discovery Offers New Insights Into Skin Healing in Salmon

May 27, 2025 — Scientists have discovered cells in the skin of Atlantic salmon that offer new insights into how wounds heal, tissues regenerate, and cellular transitions support long-term skin ...

Megalodon: The Broad Diet of the Megatooth Shark

May 26, 2025 — Contrary to widespread assumptions, the largest shark that ever lived -- Otodus megalodon -- fed on marine creatures at various levels of the food pyramid and not just the top. Scientists analyzed ...

New Study Reveals How Competition Between Algae Is Transforming the Gulf of Maine

May 22, 2025 — New research shows how rapidly proliferating turf algae are waging 'chemical warfare' to inhibit the recovery of kelp forests along Maine's warming ...

Why Europe's Fisheries Management Needs a Rethink

May 22, 2025 — Every year, total allowable catches (TACs) and fishing quotas are set across Europe through a multi-step process -- and yet many fish stocks in EU waters remain overfished. A new analysis reveals ...

Climate Change Poses Severe Threat to Bowhead Whale Habitat

May 22, 2025 — New research examining 11,700 years of bowhead whale persistence throughout the Arctic projects that sea ice loss due to climate change will cause their habitat to severely contract by up to 75 per ...

Natural Algal Communities Can Inhibit Aquaculture Pathogens

May 21, 2025 — Antimicrobial resistance is a growing issue in aquaculture. Researchers discovered that combinations of bacteria from live-feed microalgae are capable of inhibiting ...

'Sharkitecture:' A Nanoscale Look Inside a Blacktip Shark's Skeleton

May 20, 2025 — Using synchrotron X-ray nanotomography with detailed 3D imaging and in-situ mechanical testing, researchers are peering inside shark skeletons at the nanoscale, revealing a microscopic ...

Surprise Baby Whale Sightings Reveal There's Still Much to Learn About Humpbacks

May 20, 2025 — Humpback whales are not always born in tropical waters, new research has shown -- challenging long-held assumptions about their breeding and migration behaviors, while raising new questions for ...

Heat-Tolerant Symbionts a Critical Key to Protecting Florida's Elkhorn Coral from Bleaching During Marine Heatwaves

May 16, 2025 — A new study reveals that heat-tolerant symbiotic algae may be essential to saving elkhorn coral (Acropora palmata) -- a foundational species in Caribbean reef ecosystems -- from the devastating ...

Scientists Use Fossils to Assess the Health of Florida's Largest Remaining Seagrass Bed: Surprisingly, It's Doing Well!

May 15, 2025 — A new study shows that seagrass ecosystems along the northern half of Florida's Gulf Coast have remained relatively healthy and undisturbed for the last several thousand ...

An Ink That Boosts Coral Reef Settlement by 20 Times

May 14, 2025 — With coral reefs in crisis due to climate change, scientists have engineered a bio-ink that could help promote coral larvae settlement and restore these underwater ecosystems before it's too ...

Invasive Salmon, Clams and Seaweed Are Next Threats to Biodiversity in Britain

May 12, 2025 — Pink salmon, Purple Asian clams, marine invertebrates that form spaghetti-like colonies and a nematode worm that causes extensive deaths of trees are among the new entries in experts' watchlist ...

New Ancient Fish Species Earliest Known Salmon Ancestor

May 9, 2025 — The Arctic landscape during the Cretaceous Period may have been dominated by the dinosaurs, but the rivers and streams held something more familiar. Alaska's fresh waters 73 million years ago ...