Segment One Fish in the News. Each week the Bailey Brothers start the Pet Fish Talk Show with some fun and interesting stories about fish in the news.     Piranhas, like the ones shown to the left, form schools to avoid predators. Photo by Reuters.   A Pink Dolphin swims along side a normal Dolphin in Calcasieu Lake, Louisiana. Photo by Capt. Erik Rue, Calcasieu Charter Service.   Hamlet Fish, like the one shown, have been observed stalking fish species with similar color patterns to surprise their prey. Photo by Commander William Harrigan, NOAA Corps.     From London, England, "Vicious" Piranhas are Really Wimps. Despite their fearsome reputation, piranhas are wimps that gather in large shoals to protect themselves from predators, scientists said on Monday. Rather than aggressive killers, research shows piranhas are omnivorous scavengers, eating mainly fish, plants and insects, Anne Magurran of Scotland's University of St Andrews said. "Previously it was thought piranhas shoaled as it enabled them to form a cooperative hunting group. However, we have found that it is primarily a defensive behavior," she said. Piranhas face constant attack from predators including river dolphins, caiman -- a relative of the crocodile -- and bigger fish, such as the Giant Piracucu. "Their cautious behavior is crucial to avoid being eaten," Magurran said. Click here to read more. Special thanks to Craig from Brisbane, Australia, for the link to this story.   In Calcasieu Lake, Louisiana, Rare Pink Dolphin Seen in Louisiana Lake. A charter-boat captain from Lake Charles, La., photographed a rare pink dolphin a couple of weeks ago in Calcasieu Lake, an estuary just north of the Gulf of Mexico in southwestern Louisiana. According to Calcasieu Charter Service's Web site, Capt. Erik Rue was on the lake June 24 with fishing customers when five dolphins came into view — four normal-looking gray ones, and a bright pink one that appeared to be an adolescent. "It appears to be an uncanny freak of nature, an albino dolphin, with reddish eyes and glossy pink skin," the Web site reads. "It is small in comparison to the others it is traveling with and appears to be a youngster traveling with mama." Click here to read more.   From Cornell University in New York Electric Fish Conduct Electric Duets In Aquatic Courtship. Cornell researchers have discovered that in the battle of the sexes, African electric fish couples not only use specific electrical signals to court but also engage in a sort of dueling "electric duet." Click here to read more.   From Texas A & M University Study of Underground Lakes in Antarctica ... The discovery of interconnected lakes beneath kilometers of ice in Antarctica could be one of the most important scientific finds in recent years, but proper procedures need to be established before investigation begins, says a Texas A&M University scientist who is a leader in the research efforts. Click here to read more.   Interactions Shape the Brains of Cichlid Fishes. Recent research provides evidence that the shape and size of cichlid brains is strongly influenced by environmental complexity and social interactions among conspecifics.    Salt Lake City, Utah, Protection Sought for Key Desert Fish. The Center for Biological Diversity, Confederated Tribes of the Goshute Reservation, Great Basin Chapter of Trout Unlimited, and Utah Chapter of the Sierra Club filed a petition today to protect the least chub, a rare fish species found only in Utah, as a threatened or endangered species under the federal Endangered Species Act. The least chub has been reduced to just six fragile wild populations, three of which occur in the Snake Valley, where planned pumping of water for runaway growth in Las Vegas is a serious threat to the tiny fish’s survival. Click here to read more.   From McGill University in Canada Color Patterns Spur Speciation In Tropical Fish. A team of researchers from McGill University and the Smithsonian Tropical Research Institute (STRI) has provided the first example of how colour patterns on a coral reef fish species can drive its evolution into many distinct species. The researchers looked at feeding and mating behaviours based on colour patterns to explain the emergence of several species of hamlet fish (genus Hypoplectrus). Predatory Hypoplectrus fish were observed tracking other non-predatory fish species with similar colour patterns to surprise their prey, which are usually not afraid of non-predatory fish species. Click here to read more.   Near the Salton Sea in California Endangered Desert Pupfish found in Research Ponds. Researchers from the U.S. Geological Survey (USGS) have discovered a population of the endangered desert pupfish (Cyprinodon macularius)in constructed ponds along the southeastern shore of the Salton Sea, in south-central California. Preliminary estimates of more than 1,000 pupfish will need to be evaluated by a detailed survey that will be conducted as soon as the appropriate permits are obtained. Dr. Douglas Barnum, scientist with the USGS Salton Sea Science Office, called the discovery a "scientific windfall" that will provide a unique opportunity to learn more about this endangered species. Dr. Michael Saiki, fisheries biologist with the USGS Western Fisheries Research Center's Dixon Duty Station noted, "What's significant about this discovery is the large number of pupfish we are seeing!" Click here to read more.   Segment Two   Segment Three   Segment Four   A Big Sincere Thank-you for calling during the show to Kenny from Wisconsin, Jay from Evansville, Indiana, "Mustang" Tim from Detroit, and Jourdan from Connecticut. The Bailey Brothers encourage YOU to call Pet Fish Talk during the show and talk about your pet fish.     Download of this Entire Show Here's how: Right-Click here, then click on "Save Target (or Link) As ...".  Navigate to the folder you prefer, and click on the button labeled "Save". Later you can copy the MP3-file to your iPod or other MP3-player. You can also burn files to CDs, then play them in a CD-player.  Click here to download the PodCast for this show. 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