Tree of Life
Plant Flower, Tree
Invertebrate Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human
These are organized by a classification scheme developed exclusively for Cosma. More…
fish : any of numerous cold-blooded strictly aquatic craniate vertebrates that include the bony fishes and usually the cartilaginous and jawless fishes and that have typically an elongated somewhat spindle-shaped body terminating in a broad caudal (see caudal 2) fin, limbs in the form of fins when present at all, and a 2-chambered heart by which blood is sent through thoracic gills to be oxygenated — Webster
Fish are the gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates, together forming the olfactores. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Tetrapods emerged within lobe-finned fishes, so cladistically they are fish as well. However, traditionally fish are rendered paraphyletic by excluding the tetrapods (i.e., the amphibians, reptiles, birds and mammals which all descended from within the same ancestry). Because in this manner the term “fish” is defined negatively as a paraphyletic group, it is not considered a formal taxonomic grouping in systematic biology. The traditional term pisces (also ichthyes) is considered a typological, but not a phylogenetic classification. — Wikipedia
Ichthyology, also known as fish science, is the branch of zoology devoted to the study of fish. This includes bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). While a large number of species have been discovered, approximately 250 new species are officially described by science each year. According to FishBase, 33,400 species of fish had been described by October 2016. — Wikipedia
How to set up freshwater aquariums (Drs. Foster & Smith Educational Staff)
Aquarium Calculators (Calculator.com)
Beginner to Aquarium Fish Keeping (Sam Hirte-Runtsch, Aquarium Fish Magazine)
Fish Link Central
Fish News -- ScienceDaily All about fish. Current research in marine biology including fish habitats, aquaculture, speciation, deep sea fish and more.
Researchers find climate change and turf seaweed...
on November 14, 2019 at 9:19 pm
Researchers find environmental developments caused by climate change are contributing to the transformation of the seafloor to a lower, more patchy seascape dominated by shrub-like seaweed which could impact species habitats and the structure of the food web.
Bigger doesn't mean better for hatchery-released...
on November 14, 2019 at 9:18 pm
A recent study examines hatchery practices in regards to how Chinook salmon hatcheries in the PNW are affecting wild populations over the past decades. Over 65 years, Chinook salmon hatcheries in the PNW have skewed towards releasing larger fish that are more easily preyed upon.
How giant kelp may respond to climate change
on November 13, 2019 at 10:03 pm
Like someone from Minnesota being dropped into an Arizona heat wave, giant kelp living in cooler, high-latitude waters were more vulnerable to excessive heat than kelp already living in warmer, Southern California waters, according to a study of Chilean and Californian kelp.
Healthy mangroves help coral reef fisheries under...
on November 13, 2019 at 2:25 pm
Healthy mangroves can help fight the consequences of climate change on coral reef fisheries, according to a new study. Researchers say corals have been bleached and reefs have lost their structural complexity as a major consequence of warming seas.
Cats of the sea offer insights into territorial...
on November 12, 2019 at 12:36 pm
Researchers carrying out regular monitoring of a Marine Protected Area off the UK coastline noticed species of wrasse demonstrating almost cat-like behavior as they chased lasers shone onto the seabed.
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
Yellowstone's migrating bison manipulate...
on November 18, 2019 at 8:00 pm
On a typical June day in Yellowstone, it's not unusual to see hundreds of bison grazing in the Lamar Valley. The herds appear to aimlessly move back and forth through meadows threaded by a winding river, just passive figures in an idyllic scene. But, as it turns out, that's far from the full picture.
Study of Wisconsin walleye finds recreational...
on November 18, 2019 at 8:00 pm
There's a long-standing belief in the freshwater fishing community that once anglers find it too hard to land a particular fish for their dinner plate, they either move on to fishing for different species or fish in new waters, giving depleted populations time to rebound.
Fate of bigeye tuna in the balance in quota meet
on November 18, 2019 at 3:52 pm
The fate of big-eye tuna, over-fished and in decline, could be decided this week when fishing nations meet to set quotas after failing last year to agree on safeguard measures for the valuable food resource.
Can the long-lost abalone make a comeback in...
on November 18, 2019 at 2:30 pm
Hunched over a tank inside the Bodega Marine Laboratory, alongside bubbling vats of seaweed and greenhouses filled with algae, Kristin Aquilino coaxed a baby white abalone onto her hand.
Nanomaterials in wastewater have toxic effects on...
on November 18, 2019 at 12:27 pm
You may not always think about it when you do your laundry or flush the toilet, but whatever you eat, wear or apply on your skin ends up in wastewater and eventually reaches the environment. The use of nanoparticles in consumer products like textiles, foods and personal care products is increasing. What is so special about nanoparticles is their tiny size: One nanometer is one-billionth of a meter. The small size gives nanoparticles unique and novel properties compared to their bigger […]