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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.
- 'Falling insect' season length impacts river...on March 5, 2021 at 2:24 pm
Insects that fall from the surrounding forest provide seasonal food for fish in streams. Researchers have shown that the lengthening of this period has a profound effect on stream food webs and ecosystem functions. These research results provide proof that changes in forest seasonality also affect the ecosystems of nearby rivers. This finding also highlights the importance of predicting the effects of climate change.
- Female gannets go the extra mile to feed chickson March 4, 2021 at 5:53 pm
Female gannets travel further than male gannets to find fish for their chicks in some years but not others, new research shows.
- Limiting invasive species may be a better goal...on March 4, 2021 at 3:04 pm
Managing invasive species -- not eliminating them altogether -- is a better use of time and conservation resources in many cases, according to a biologist.
- Small-scale fisheries offer strategies for...on March 3, 2021 at 7:48 pm
Small-scale fisheries, which employ about 90 percent of the world's fishers and supply half the fish for human consumption, are on the frontlines of climate change. They may offer insights into resilience.
- Diversity of fish species supply endangered...on March 3, 2021 at 7:24 pm
Endangered Southern Resident killer whales prey on a diversity of Chinook and other salmon. The stocks come from an enormous geographic range as far north as Alaska and as far south as California's Central Valley, a new analysis shows.
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.
- Oahu marine protected areas offer limited...on February 27, 2021 at 6:55 am
Marine protected areas (MPAs) around Oʻahu do not adequately protect populations of herbivorous reef fishes that eat algae on coral reefs. That is the primary conclusion of a study published in Coral Reefs by researchers from the University of Hawaiʻi at Mānoa School of Ocean and Earth Science and Technology (SOEST).
- Agents of food-borne zoonoses confirmed to...on February 26, 2021 at 7:25 pm
Parasitic flatworms known as agents of food-borne zoonoses were confirmed to use several species of thiarid snails, commonly found in freshwater and brackish environments in southeast Asia, as their first intermediate host. These parasites can cause severe ocular infections in humans who consume raw or improperly cooked fish that have fed on infected snails. The study, conducted in South Thailand by Thai and German researchers and led by Kitja Apiraksena, Silpakorn University, is published in […]
- Warming may promote spread of invasive blue...on February 26, 2021 at 4:20 pm
A study by researchers at William & Mary's Virginia Institute of Marine Science suggests that continued warming of Atlantic coastal waters may enhance the spread of invasive blue catfish within the Chesapeake Bay and other estuaries along the U.S. East Coast.
- Could a common barnacle help find missing persons...on February 26, 2021 at 1:54 pm
A common barnacle could be used to help trace missing persons lost at sea, according to research by UNSW Science.
- Underwater Understory: The southwest forest...on February 26, 2021 at 1:34 pm
Deep in Australia's southwest is a hidden hotspot of biodiversity.