Data Deficient Animals By AZ Animals Staff Published: January 1, 2021© Lillac/Shutterstock.com Share this post on: Animals HomeAll AnimalsDifferent Types and Categories of Endangered AnimalsData Deficient Animals Find your favorite Animals! Search WATCH: Sharks biting alligators, the most epic lion battles, and MUCH more.Enter your email in the box below to get the most mind-blowing animal stories and videos delivered directly to your inbox every day. Thanks for subscribing!Data Deficient SpeciesAnchoviesNovember 12th is celebrated as National Pizza with the Works Except Anchovies DayArapaimaOne of the largest freshwater fishBigfin Reef Squid Can change color through use of chromatophoresBlack MarlinEvery black marlin is born as a female.Boelen’s pythonA single hatchling can go for over $5,000 as a pet.Cat SnakeSome cat snakes have a prehensile tail that helps them climb into trees.CobrasSeveral medicines have been created using cobra venom.DragonfishDragonfish can emit red light from their eyesDusky DolphinCommunicates using whistles, squeaks and clicks!Gypsy Cuckoo BumblebeeN/AHagfishCan use slime to suffocate marine predators or escape captureHorn SharkEndemic to the Californian coast!HorseHas evolved over 50 million years!Humboldt SquidThe Humboldt squid can change colors to communicateJohn DoryThe John Dory is often labeled one of the ugliest fish in the world and has no known relatives.Killer WhaleTypically consumes over 200 kg of food a day!LeptocephalusLeptocephali have flat bodies filled with jelly-like substances, surrounded by a thin layer of muscle.PipefishThe male pipefish has the ability to carry fertilized eggs with himPolka Dot StingrayCan detect electrical fields from other creaturesPythonFemale pythons lay eggs and defend them until they hatch.SnailfishThe deepest ocean-dweller is a snailfish who was found over 26,700 feet below sea level.Spider-Tailed Horned ViperThey like to hide in crevices on the sides of cliffs, waiting for prey.ViperfishViperfish have a bioluminescent spine on their dorsal fin.Yeti CrabThe yeti crab has hairy arms, which collect bacteria to feed onData Deficient Species ListAnchoviesArapaimaBigfin Reef Squid Black MarlinBoelen’s pythonCat SnakeCobrasDragonfishDusky DolphinGypsy Cuckoo BumblebeeHagfishHorn SharkHorseHumboldt SquidJohn DoryKiller WhaleLeptocephalusPipefishPolka Dot StingrayPythonSnailfishSpider-Tailed Horned ViperViperfishYeti CrabConservation Status ListsExtinct SpeciesExtinct in the Wild SpeciesCritically Endangered SpeciesEndangered SpeciesVulnerable SpeciesNear Threatened SpeciesLeast Concern SpeciesData Deficient SpeciesNot Evaluated Species Share this post on: About the Author AZ Animals Staff AZ Animals is a growing team of animals experts, researchers, farmers, conservationists, writers, editors, and -- of course -- pet owners who have come together to help you better understand the animal kingdom and how we interact.Thank you for reading! Have some feedback for us? Contact the AZ Animals editorial team.