Search results
Results from the WOW.Com Content Network
Fish anatomy. Fish anatomy is the study of the form or morphology of fish. It can be contrasted with fish physiology, which is the study of how the component parts of fish function together in the living fish. [1] In practice, fish anatomy and fish physiology complement each other, the former dealing with the structure of a fish, its organs or ...
Catfish (or catfishes; order Siluriformes / s ɪ ˈ lj ʊər ɪ f ɔːr m iː z / or Nematognathi) are a diverse group of ray-finned fish.Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to ...
Close-up of fish melanophores. Fish coloration is produced through specialized cells called chromatophores. The dermal chromatophore is a basic color unit in amphibians, reptiles, and fish which has three cell layers: "the xanthophore (contains carotenoid and pteridine pigments), the iridophore (reflects color structurally), and the melanophore (contains melanin)". [5]
Nina Jablonski. Nina G. Jablonski (born c. 1953/1954) [1] is an American anthropologist and palaeobiologist, known for her research into the evolution of skin color in humans. She is engaged in public education about human evolution, human diversity, and racism. In 2021, she was elected to the U.S. National Academy of Sciences [2] and in 2009 ...
Hermaphrodite. v. t. e. Sexual dimorphism is the condition where sexes of the same species exhibit different morphological characteristics, including characteristics not directly involved in reproduction. [1] The condition occurs in most dioecious species, which consist of most animals and some plants.
Colorpoint patterns are where extremities (paws, face, and tail) of the body are colored differently to the rest of the body. The areas with different color may be referred as 'points' or being 'pointed'. [3] Colorpoint patterns occur due to acromelanism, which is a condition where pigmentation is affected by temperature. [3]
Clarias cavernicola. The cave catfish[2] (Clarias cavernicola) [3] is a critically endangered species of airbreathing catfish. [1] This cavefish is only known to live in the Aigamas cave, Otjozondjupa region, Namibia. [4][2] It has also been reported from the nearby Dragon's Breath Cave. [5] The golden cave catfish lack pigmentation and are up ...
Chromatophores in the skin of a squid. Chromatophores are cells that produce color, of which many types are pigment -containing cells, or groups of cells, found in a wide range of animals including amphibians, fish, reptiles, crustaceans and cephalopods. Mammals and birds, in contrast, have a class of cells called melanocytes for coloration.